From davidm at astro.berkeley.edu  Fri May  2 01:34:54 2008
From: davidm at astro.berkeley.edu (David MacMahon)
Date: Thu, 1 May 2008 22:34:54 -0700
Subject: [Tioga-users] subfigure vs subplot
Message-ID: <3B6446DF-300F-437C-925C-9862335ABBB8@astro.berkeley.edu>

Can anyone enlighten me on the differences between subfigure and  
subplot?  They seem to be used for similar things.  Can there be  
multiple subplots in one subfigure and multiple subfigures in one  
page?  I think I'm unclear on the terminology.  What's the difference  
between a figure and a plot?

Thanks,
Dave


From fourmond at gmail.com  Fri May  2 03:16:36 2008
From: fourmond at gmail.com (Vincent Fourmond)
Date: Fri, 2 May 2008 09:16:36 +0200
Subject: [Tioga-users] subfigure vs subplot
In-Reply-To: <3B6446DF-300F-437C-925C-9862335ABBB8@astro.berkeley.edu>
References: <3B6446DF-300F-437C-925C-9862335ABBB8@astro.berkeley.edu>
Message-ID: <2e474d6f0805020016i5aafdaaey8f0a18ac85288733@mail.gmail.com>

  Hello

On Fri, May 2, 2008 at 7:34 AM, David MacMahon
<davidm at astro.berkeley.edu> wrote:
> Can anyone enlighten me on the differences between subfigure and subplot?
> They seem to be used for similar things.  Can there be multiple subplots in
> one subfigure and multiple subfigures in one page?  I think I'm unclear on
> the terminology.  What's the difference between a figure and a plot?

  From the source code, the main difference is that legends are reset
at the beginning of a plot, and not of a figure (and trace functions
are slightly different too).

  Cheers,

      Vincent

PS: Ccing you in doubt

From davidm at astro.berkeley.edu  Fri May  2 18:47:53 2008
From: davidm at astro.berkeley.edu (David MacMahon)
Date: Fri, 2 May 2008 15:47:53 -0700
Subject: [Tioga-users] Gridlines
Message-ID: <0FFBB8B5-D79F-45AD-8292-6EA63D01F1AB@astro.berkeley.edu>

Is there an easy way to put grid lines on a plot?  By easy, I mean an  
existing method I can call with perhaps a few options like line style  
and color.

If not, I guess I'll have to write one myself that gets the axis  
information and the plot boundaries and then draws the grid lines  
individually.  Does anyone have any tips on how to do that?  How  
would I get minor tick locations?

Dave


From fourmond at gmail.com  Sat May  3 02:40:57 2008
From: fourmond at gmail.com (Vincent Fourmond)
Date: Sat, 03 May 2008 08:40:57 +0200
Subject: [Tioga-users] Gridlines
In-Reply-To: <0FFBB8B5-D79F-45AD-8292-6EA63D01F1AB@astro.berkeley.edu>
References: <0FFBB8B5-D79F-45AD-8292-6EA63D01F1AB@astro.berkeley.edu>
Message-ID: <481C08F9.2040006@gmail.com>

David MacMahon wrote:
> Is there an easy way to put grid lines on a plot?  By easy, I mean an
> existing method I can call with perhaps a few options like line style
> and color.

  For now, no.

> If not, I guess I'll have to write one myself that gets the axis
> information and the plot boundaries and then draws the grid lines
> individually.  Does anyone have any tips on how to do that?  How would I
> get minor tick locations?

  Seems that my additions to the axes function are not only useful to
myself ;-)... Here is the code I use in ctioga:

      # Draws the background lines associated with this axis, if
      # applicable.
      #
      # This function requires Tioga SVN -r 482
      def draw_lines(t, container)

        return unless @lines_color
        # First, getting major ticks location from tioga
        info = t.axis_information(axis_argument(t, container))

        if info['vertical']
          x0 = t.bounds_left
          x1 = t.bounds_right
        else
          y0 = t.bounds_bottom
          y1 = t.bounds_top
        end

        t.context do
          t.stroke_color = @lines_color
          t.line_width = @lines_width || info['major_tick_width']
          t.line_type = @lines_style
          for val in info['major']
            if info['vertical']
              t.stroke_line(x0, val, x1, val)
            else
              t.stroke_line(val, y0, val, y1)
            end
          end
        end
      end

  There is currently no way to get minor tick location (much more
delicate to extract from the C level than the major ticks). I probably
should give it a try, though.

  Cheers,

	Vincent

From davidm at astro.berkeley.edu  Sat May  3 03:06:33 2008
From: davidm at astro.berkeley.edu (David MacMahon)
Date: Sat, 3 May 2008 00:06:33 -0700
Subject: [Tioga-users] Gridlines
In-Reply-To: <481C08F9.2040006@gmail.com>
References: <0FFBB8B5-D79F-45AD-8292-6EA63D01F1AB@astro.berkeley.edu>
	<481C08F9.2040006@gmail.com>
Message-ID: <2D19DA4C-3C4D-40A4-A4FC-D0020209B8E8@astro.berkeley.edu>

Thanks, Vincent!  I was just typing another message saying that I  
think I found a fairly straightforward way to do it by using really  
long tick marks.  It is not so generalized as yours as it requires  
the ticks to be both inside and not outside, but it does work with  
minor tick marks, too.  Here's the text I was typing...

I tried "t.xaxis_major_tick_length = t.bounds_height", but that did  
not work because xaxis_major_tick_length= expects a value in "units  
of the default text height".  So then I tried...

t.xaxis_major_tick_length = t.bounds_height /  
t.default_text_height_dy / 2
t.yaxis_major_tick_length = t.bounds_width /  
t.default_text_height_dx / 2

...and it worked!

Dave

On May 2, 2008, at 23:40 , Vincent Fourmond wrote:
> David MacMahon wrote:
>> Is there an easy way to put grid lines on a plot?  By easy, I mean an
>> existing method I can call with perhaps a few options like line style
>> and color.
>
>   For now, no.
>
>> If not, I guess I'll have to write one myself that gets the axis
>> information and the plot boundaries and then draws the grid lines
>> individually.  Does anyone have any tips on how to do that?  How  
>> would I
>> get minor tick locations?
>
>   Seems that my additions to the axes function are not only useful to
> myself ;-)... Here is the code I use in ctioga:
>
>       # Draws the background lines associated with this axis, if
>       # applicable.
>       #
>       # This function requires Tioga SVN -r 482
>       def draw_lines(t, container)
>
>         return unless @lines_color
>         # First, getting major ticks location from tioga
>         info = t.axis_information(axis_argument(t, container))
>
>         if info['vertical']
>           x0 = t.bounds_left
>           x1 = t.bounds_right
>         else
>           y0 = t.bounds_bottom
>           y1 = t.bounds_top
>         end
>
>         t.context do
>           t.stroke_color = @lines_color
>           t.line_width = @lines_width || info['major_tick_width']
>           t.line_type = @lines_style
>           for val in info['major']
>             if info['vertical']
>               t.stroke_line(x0, val, x1, val)
>             else
>               t.stroke_line(val, y0, val, y1)
>             end
>           end
>         end
>       end
>
>   There is currently no way to get minor tick location (much more
> delicate to extract from the C level than the major ticks). I probably
> should give it a try, though.
>
>   Cheers,
>
> 	Vincent
> _______________________________________________
> Tioga-users mailing list
> Tioga-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/tioga-users


From fourmond at gmail.com  Sat May  3 03:08:22 2008
From: fourmond at gmail.com (Vincent Fourmond)
Date: Sat, 03 May 2008 09:08:22 +0200
Subject: [Tioga-users] Gridlines
In-Reply-To: <2D19DA4C-3C4D-40A4-A4FC-D0020209B8E8@astro.berkeley.edu>
References: <0FFBB8B5-D79F-45AD-8292-6EA63D01F1AB@astro.berkeley.edu>
	<481C08F9.2040006@gmail.com>
	<2D19DA4C-3C4D-40A4-A4FC-D0020209B8E8@astro.berkeley.edu>
Message-ID: <481C0F66.2000707@gmail.com>

David MacMahon wrote:
> Thanks, Vincent!  I was just typing another message saying that I think
> I found a fairly straightforward way to do it by using really long tick
> marks.  It is not so generalized as yours as it requires the ticks to be
> both inside and not outside, but it does work with minor tick marks,
> too.  Here's the text I was typing...
> 
> I tried "t.xaxis_major_tick_length = t.bounds_height", but that did not
> work because xaxis_major_tick_length= expects a value in "units of the
> default text height".  So then I tried...
> 
> t.xaxis_major_tick_length = t.bounds_height / t.default_text_height_dy / 2
> t.yaxis_major_tick_length = t.bounds_width / t.default_text_height_dx / 2
> 
> ...and it worked!

  On down side, though: I think the grid belongs in the background of
the plot, while this trick puts it in the foreground (in front of the
plots), which is not fantastic for visibility ;-)...

	Vincent


From davidm at astro.berkeley.edu  Sat May  3 03:38:10 2008
From: davidm at astro.berkeley.edu (David MacMahon)
Date: Sat, 3 May 2008 00:38:10 -0700
Subject: [Tioga-users] Gridlines
In-Reply-To: <481C0F66.2000707@gmail.com>
References: <0FFBB8B5-D79F-45AD-8292-6EA63D01F1AB@astro.berkeley.edu>
	<481C08F9.2040006@gmail.com>
	<2D19DA4C-3C4D-40A4-A4FC-D0020209B8E8@astro.berkeley.edu>
	<481C0F66.2000707@gmail.com>
Message-ID: <9CC1F923-F263-4D39-9081-79040F5DC103@astro.berkeley.edu>

On May 3, 2008, at 0:08 , Vincent Fourmond wrote:
>   On down side, though: I think the grid belongs in the background of
> the plot, while this trick puts it in the foreground (in front of the
> plots), which is not fantastic for visibility ;-)...

You're right, but it is easy and by minimizing the width of the ticks  
it can be tolerable.  Maybe we could provide a mechanism to send the  
ticks to the background if desired?

Dave


From fourmond at gmail.com  Sat May  3 03:47:35 2008
From: fourmond at gmail.com (Vincent Fourmond)
Date: Sat, 03 May 2008 09:47:35 +0200
Subject: [Tioga-users] Gridlines
In-Reply-To: <9CC1F923-F263-4D39-9081-79040F5DC103@astro.berkeley.edu>
References: <0FFBB8B5-D79F-45AD-8292-6EA63D01F1AB@astro.berkeley.edu>
	<481C08F9.2040006@gmail.com>
	<2D19DA4C-3C4D-40A4-A4FC-D0020209B8E8@astro.berkeley.edu>
	<481C0F66.2000707@gmail.com>
	<9CC1F923-F263-4D39-9081-79040F5DC103@astro.berkeley.edu>
Message-ID: <481C1897.2060002@gmail.com>


  Hello,

David MacMahon wrote:
> Maybe we could provide a mechanism to send the ticks
> to the background if desired ?

  From my knowledge of the code, that would be very painful to do, so I
don't think it will happen, at least not in a close future.

  Cheers,

	Vincent


From paxton at kitp.ucsb.edu  Sat May  3 09:41:27 2008
From: paxton at kitp.ucsb.edu (Bill Paxton)
Date: Sat, 3 May 2008 06:41:27 -0700
Subject: [Tioga-users] Gridlines
In-Reply-To: <481C1897.2060002@gmail.com>
References: <0FFBB8B5-D79F-45AD-8292-6EA63D01F1AB@astro.berkeley.edu>
	<481C08F9.2040006@gmail.com>
	<2D19DA4C-3C4D-40A4-A4FC-D0020209B8E8@astro.berkeley.edu>
	<481C0F66.2000707@gmail.com>
	<9CC1F923-F263-4D39-9081-79040F5DC103@astro.berkeley.edu>
	<481C1897.2060002@gmail.com>
Message-ID: <8563416D-8644-4F30-9B3C-6631E01C08AE@kitp.ucsb.edu>

Hi Vincent,

Tioga uses a simple "newest-goes-on-top" model, so to put the ticks  
in the background it is just a matter of drawing them before adding  
the contents of the plot rather than after.  Perhaps when you modify  
the axis code for access to minor tick locations you could split off  
the tick drawing so that it can be done separately from the rest of  
the axis rendering if desired.

If you'd like me to take a crack at it, I'd be happy to take a look  
-- let me know!

Cheers,
Bill



On May 3, 2008, at 12:47 AM, Vincent Fourmond wrote:

>
>   Hello,
>
> David MacMahon wrote:
>> Maybe we could provide a mechanism to send the ticks
>> to the background if desired ?
>
>   From my knowledge of the code, that would be very painful to do,  
> so I
> don't think it will happen, at least not in a close future.
>
>   Cheers,
>
> 	Vincent
>
> _______________________________________________
> Tioga-users mailing list
> Tioga-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/tioga-users
>


From davidm at astro.berkeley.edu  Tue May  6 15:14:21 2008
From: davidm at astro.berkeley.edu (David MacMahon)
Date: Tue, 6 May 2008 12:14:21 -0700
Subject: [Tioga-users] Help with legend placement on scatter plot
Message-ID: <2D8D236D-D5AB-4DA2-B9A3-8274D7AE1C2A@astro.berkeley.edu>

I'm having a hard time getting a legend to work well with a scatter  
(i.e. marker) plot.  I've attached a short script showing what I'm  
doing and the pdf file that results.  The script only works with a  
recent SVN version of Tioga (i.e. won't work with Tioga 1.8).  It  
works OK except for the placement of the legend.

My scatter plots (but not the sample script) have many markers of  
different colors and sizes.  I can put a color bar beside the plot to  
show the meaning of the colors, but I'd also like to show a few  
"representative" markers of various sizes in the legend with  
associated their values as text so the viewer can get some idea of  
what the different sizes mean.

If anyone can give me a pointer or two, I'd appreciate it!

Thanks,
Dave
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From nomo17k at gmail.com  Tue May  6 15:32:05 2008
From: nomo17k at gmail.com (Taro Sato)
Date: Tue, 6 May 2008 12:32:05 -0700
Subject: [Tioga-users] Help with legend placement on scatter plot
In-Reply-To: <2D8D236D-D5AB-4DA2-B9A3-8274D7AE1C2A@astro.berkeley.edu>
References: <2D8D236D-D5AB-4DA2-B9A3-8274D7AE1C2A@astro.berkeley.edu>
Message-ID: <ebdf6c730805061232l1b69e389p5b7e9c4ad46a387@mail.gmail.com>

On Tue, May 6, 2008 at 12:14 PM, David MacMahon
<davidm at astro.berkeley.edu> wrote:
> I'm having a hard time getting a legend to work well with a scatter (i.e.
> marker) plot.  I've attached a short script showing what I'm doing and the
> pdf file that results.  The script only works with a recent SVN version of
> Tioga (i.e. won't work with Tioga 1.8).  It works OK except for the
> placement of the legend.
>
>  My scatter plots (but not the sample script) have many markers of different
> colors and sizes.  I can put a color bar beside the plot to show the meaning
> of the colors, but I'd also like to show a few "representative" markers of
> various sizes in the legend with associated their values as text so the
> viewer can get some idea of what the different sizes mean.
>
>  If anyone can give me a pointer or two, I'd appreciate it!
>
>  Thanks,
>  Dave
>


Dave -- One thing you could do is to make a fake data just for the
purpose of controlling legend.  If the data coordinates are set to be
outside of the plot range, they won't show up in the plot, but you can
then fully control what to show in the legend.  I remember doing that
myself before, which worked okay.

(That's not an elegant solution of course, but I think we all agree
that the legend implementation is something that needs more work at
this point...)

Cheers,
Taro

From davidm at astro.berkeley.edu  Tue May  6 15:54:35 2008
From: davidm at astro.berkeley.edu (David MacMahon)
Date: Tue, 6 May 2008 12:54:35 -0700
Subject: [Tioga-users] Help with legend placement on scatter plot
In-Reply-To: <ebdf6c730805061248u64a1643r4429fd79176c2777@mail.gmail.com>
References: <2D8D236D-D5AB-4DA2-B9A3-8274D7AE1C2A@astro.berkeley.edu>
	<ebdf6c730805061230s4a4ef169y2d0c4b3dc732d69c@mail.gmail.com>
	<766A958F-4E33-47CB-9271-740C44F0F85C@astro.berkeley.edu>
	<ebdf6c730805061248u64a1643r4429fd79176c2777@mail.gmail.com>
Message-ID: <97F06B8D-CD9B-4CFB-987E-27EF15DAE1D9@astro.berkeley.edu>


On May 6, 2008, at 12:48 , Taro Sato wrote:
> There are a
> few sample plots/codes in the distribution, which let you study how
> things are supposed to be done.

Yeah, I saw those, but they seem more focused on legends for plots  
with multiple lines.  I tried using 'legend_right_margin' etc., but  
they didn't seem to work the same when using markers instead of  
lines. :-(

Dave


From paxton at kitp.ucsb.edu  Tue May  6 16:57:49 2008
From: paxton at kitp.ucsb.edu (Bill Paxton)
Date: Tue, 6 May 2008 13:57:49 -0700
Subject: [Tioga-users] Help with legend placement on scatter plot
In-Reply-To: <2D8D236D-D5AB-4DA2-B9A3-8274D7AE1C2A@astro.berkeley.edu>
References: <2D8D236D-D5AB-4DA2-B9A3-8274D7AE1C2A@astro.berkeley.edu>
Message-ID: <B773F860-DE20-41CE-8CC2-9D2FDFACE5AA@kitp.ucsb.edu>


On May 6, 2008, at 12:14 PM, David MacMahon wrote:

> I'm having a hard time getting a legend to work well with a scatter  
> (i.e. marker) plot.  I've attached a short script showing what I'm  
> doing and the pdf file that results.  The script only works with a  
> recent SVN version of Tioga (i.e. won't work with Tioga 1.8).  It  
> works OK except for the placement of the legend.
>
> My scatter plots (but not the sample script) have many markers of  
> different colors and sizes.  I can put a color bar beside the plot  
> to show the meaning of the colors, but I'd also like to show a few  
> "representative" markers of various sizes in the legend with  
> associated their values as text so the viewer can get some idea of  
> what the different sizes mean.
>
> If anyone can give me a pointer or two, I'd appreciate it!
>
> Thanks,
> Dave<marker_legend.pdf>
>
> <marker_legend.rb>_______________________________________________
> Tioga-users mailing list
> Tioga-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/tioga-users

Hi Dave,

In your code you are first calling show_plot and then  
show_plot_with_legend.  You need to move the call on show_plot to the  
start of the block of the show_plot_with_legend call.  That will give  
you the default placement for the legend which is outside of the box  
on the right.  You can move it around by setting the margins in the  
dictionary arg to show_plot_with_legend.  For example, you can put  
the legend inside by doing

t.show_plot_with_legend('legend_left_margin' => 0.65,  
'plot_right_margin' => 0)

The 'plot_right_margin' => 0 tells show_plot_with_legend to make the  
plot extend to the full right edge of the frame that holds both the  
plot and the legend.  The default for plot_right_margin is 0.18 which  
reserves space on the right for the legend.  Does that make sense?

Cheers,
Bill


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From davidm at astro.berkeley.edu  Tue May  6 17:15:40 2008
From: davidm at astro.berkeley.edu (David MacMahon)
Date: Tue, 6 May 2008 14:15:40 -0700
Subject: [Tioga-users] Help with legend placement on scatter plot
In-Reply-To: <B773F860-DE20-41CE-8CC2-9D2FDFACE5AA@kitp.ucsb.edu>
References: <2D8D236D-D5AB-4DA2-B9A3-8274D7AE1C2A@astro.berkeley.edu>
	<B773F860-DE20-41CE-8CC2-9D2FDFACE5AA@kitp.ucsb.edu>
Message-ID: <AF04FCEA-ABEA-40C9-81B0-59D079615F38@astro.berkeley.edu>

On May 6, 2008, at 13:57 , Bill Paxton wrote:
> Does that make sense?

Yes!  I've attached the new plot.

Thanks very much!

Any tips on drawing a border around and a translucent background  
behind the legend?

Dave
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From paxton at kitp.ucsb.edu  Tue May  6 17:30:25 2008
From: paxton at kitp.ucsb.edu (Bill Paxton)
Date: Tue, 6 May 2008 14:30:25 -0700
Subject: [Tioga-users] Help with legend placement on scatter plot
In-Reply-To: <AF04FCEA-ABEA-40C9-81B0-59D079615F38@astro.berkeley.edu>
References: <2D8D236D-D5AB-4DA2-B9A3-8274D7AE1C2A@astro.berkeley.edu>
	<B773F860-DE20-41CE-8CC2-9D2FDFACE5AA@kitp.ucsb.edu>
	<AF04FCEA-ABEA-40C9-81B0-59D079615F38@astro.berkeley.edu>
Message-ID: <85DE653E-4155-488A-9C0C-94410BBC6EF8@kitp.ucsb.edu>


On May 6, 2008, at 2:15 PM, David MacMahon wrote:

> Any tips on drawing a border around and a translucent background  
> behind the legend?
?

?
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From davidm at astro.berkeley.edu  Tue May  6 18:00:12 2008
From: davidm at astro.berkeley.edu (David MacMahon)
Date: Tue, 6 May 2008 15:00:12 -0700
Subject: [Tioga-users] Help with legend placement on scatter plot
In-Reply-To: <85DE653E-4155-488A-9C0C-94410BBC6EF8@kitp.ucsb.edu>
References: <2D8D236D-D5AB-4DA2-B9A3-8274D7AE1C2A@astro.berkeley.edu>
	<B773F860-DE20-41CE-8CC2-9D2FDFACE5AA@kitp.ucsb.edu>
	<AF04FCEA-ABEA-40C9-81B0-59D079615F38@astro.berkeley.edu>
	<85DE653E-4155-488A-9C0C-94410BBC6EF8@kitp.ucsb.edu>
Message-ID: <A84085CD-C71D-494E-9DE8-2280AF68D7A6@astro.berkeley.edu>

Wow, that was easy!

It might be nice to have a "legend_margins" convenience method in  
FigureMaker...

def legend_margins
   [legend_left_margin, legend_right_margin, legend_top_margin,  
legend_bottom_margin]
end

...assuming it keeps track of such things, but I'm not sure it  
exposes "margin" info.  Perhaps it could use "legend_bottom" etc.  
methods analogous to "frame_bottom" etc.?

Dave


From davidm at astro.berkeley.edu  Tue May  6 20:52:44 2008
From: davidm at astro.berkeley.edu (David MacMahon)
Date: Tue, 6 May 2008 17:52:44 -0700
Subject: [Tioga-users] Help with legend placement on scatter plot
In-Reply-To: <A84085CD-C71D-494E-9DE8-2280AF68D7A6@astro.berkeley.edu>
References: <2D8D236D-D5AB-4DA2-B9A3-8274D7AE1C2A@astro.berkeley.edu>
	<B773F860-DE20-41CE-8CC2-9D2FDFACE5AA@kitp.ucsb.edu>
	<AF04FCEA-ABEA-40C9-81B0-59D079615F38@astro.berkeley.edu>
	<85DE653E-4155-488A-9C0C-94410BBC6EF8@kitp.ucsb.edu>
	<A84085CD-C71D-494E-9DE8-2280AF68D7A6@astro.berkeley.edu>
Message-ID: <84702499-C278-4E50-A2AF-1C8C325B244A@astro.berkeley.edu>

Quick question: Must one know in advance how many legend entries  
there will be so that legend_bottom_margin can be set appropriately  
(assuming the legend starts near the top)?  If so, how does one  
calculate the legend height?  Presumably, legend_bottom_margin = 1.0  
- legend_top_margin - legend_height, where legend_height depends on  
the number of entries and each entry's height.

Thanks,
Dave

On May 6, 2008, at 15:00 , David MacMahon wrote:
> Wow, that was easy!
>
> It might be nice to have a "legend_margins" convenience method in  
> FigureMaker...
>
> def legend_margins
>   [legend_left_margin, legend_right_margin, legend_top_margin,  
> legend_bottom_margin]
> end
>
> ...assuming it keeps track of such things, but I'm not sure it  
> exposes "margin" info.  Perhaps it could use "legend_bottom" etc.  
> methods analogous to "frame_bottom" etc.?
>
> Dave
>
> _______________________________________________
> Tioga-users mailing list
> Tioga-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/tioga-users


From paxton at kitp.ucsb.edu  Tue May  6 21:22:54 2008
From: paxton at kitp.ucsb.edu (Bill Paxton)
Date: Tue, 6 May 2008 18:22:54 -0700
Subject: [Tioga-users] Help with legend placement on scatter plot
In-Reply-To: <84702499-C278-4E50-A2AF-1C8C325B244A@astro.berkeley.edu>
References: <2D8D236D-D5AB-4DA2-B9A3-8274D7AE1C2A@astro.berkeley.edu>
	<B773F860-DE20-41CE-8CC2-9D2FDFACE5AA@kitp.ucsb.edu>
	<AF04FCEA-ABEA-40C9-81B0-59D079615F38@astro.berkeley.edu>
	<85DE653E-4155-488A-9C0C-94410BBC6EF8@kitp.ucsb.edu>
	<A84085CD-C71D-494E-9DE8-2280AF68D7A6@astro.berkeley.edu>
	<84702499-C278-4E50-A2AF-1C8C325B244A@astro.berkeley.edu>
Message-ID: <F1973B5C-DDA9-470D-BF0F-FC6E835F53B7@kitp.ucsb.edu>


On May 6, 2008, at 5:52 PM, David MacMahon wrote:

> Quick question: Must one know in advance how many legend entries  
> there will be so that legend_bottom_margin can be set appropriately  
> (assuming the legend starts near the top)?  If so, how does one  
> calculate the legend height?  Presumably, legend_bottom_margin =  
> 1.0 - legend_top_margin - legend_height, where legend_height  
> depends on the number of entries and each entry's height.


Hi Dave,

Quick answer to your quick question is that I think the legend  
interface needs some work!
Perhaps you'd like to volunteer?  ; - )

The show_legend routine in FigMrk.rb calculates the placement of  
legend entries.  Take a look and see how it sets and modifies the y  
coordinate.   It is using self.default_text_height_dy and  
self.legend_scale and self.legend_text_ystart.

Let me know if I can clarify anything in the code.

Cheers,
Bill

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From davidm at astro.berkeley.edu  Tue May  6 23:56:17 2008
From: davidm at astro.berkeley.edu (David MacMahon)
Date: Tue, 6 May 2008 20:56:17 -0700
Subject: [Tioga-users] Help with legend placement on scatter plot
In-Reply-To: <F1973B5C-DDA9-470D-BF0F-FC6E835F53B7@kitp.ucsb.edu>
References: <2D8D236D-D5AB-4DA2-B9A3-8274D7AE1C2A@astro.berkeley.edu>
	<B773F860-DE20-41CE-8CC2-9D2FDFACE5AA@kitp.ucsb.edu>
	<AF04FCEA-ABEA-40C9-81B0-59D079615F38@astro.berkeley.edu>
	<85DE653E-4155-488A-9C0C-94410BBC6EF8@kitp.ucsb.edu>
	<A84085CD-C71D-494E-9DE8-2280AF68D7A6@astro.berkeley.edu>
	<84702499-C278-4E50-A2AF-1C8C325B244A@astro.berkeley.edu>
	<F1973B5C-DDA9-470D-BF0F-FC6E835F53B7@kitp.ucsb.edu>
Message-ID: <BD7E18D1-F6EC-4EF1-A259-2206010E95DD@astro.berkeley.edu>

Thanks (again) for the pointers!

Dave

On May 6, 2008, at 18:22 , Bill Paxton wrote:
>
> On May 6, 2008, at 5:52 PM, David MacMahon wrote:
>
>> Quick question: Must one know in advance how many legend entries  
>> there will be so that legend_bottom_margin can be set  
>> appropriately (assuming the legend starts near the top)?  If so,  
>> how does one calculate the legend height?  Presumably,  
>> legend_bottom_margin = 1.0 - legend_top_margin - legend_height,  
>> where legend_height depends on the number of entries and each  
>> entry's height.
>
>
> Hi Dave,
>
> Quick answer to your quick question is that I think the legend  
> interface needs some work!
> Perhaps you'd like to volunteer?  ; - )
>
> The show_legend routine in FigMrk.rb calculates the placement of  
> legend entries.  Take a look and see how it sets and modifies the y  
> coordinate.   It is using self.default_text_height_dy and  
> self.legend_scale and self.legend_text_ystart.
>
> Let me know if I can clarify anything in the code.
>
> Cheers,
> Bill
>


From edder at tkwsping.nl  Mon May 19 10:42:05 2008
From: edder at tkwsping.nl (Edwin)
Date: Mon, 19 May 2008 15:42:05 +0100
Subject: [Tioga-users] Marker outside plot area
Message-ID: <op.ubeoevfu7lw9lz@localhost>

Hi all,

I have a (log-log) plot where I want to plot one point/marker slightly  
outside the main plot area (below the xaxis). Is this possible?  
Alternatively, is it possible to plot the x-axis at any location instead  
of just TOP BOTTOM, AT_Y_ORIGIN?

Cheers,

Edwin

From paxton at kitp.ucsb.edu  Mon May 19 13:34:06 2008
From: paxton at kitp.ucsb.edu (Bill Paxton)
Date: Mon, 19 May 2008 10:34:06 -0700
Subject: [Tioga-users] Marker outside plot area
In-Reply-To: <op.ubeoevfu7lw9lz@localhost>
References: <op.ubeoevfu7lw9lz@localhost>
Message-ID: <462F4512-F3B9-458C-BCE9-FA27CB3D5FC7@kitp.ucsb.edu>

Hi Edwin,

On May 19, 2008, at 7:42 AM, Edwin wrote:

> I have a (log-log) plot where I want to plot one point/marker  
> slightly outside the main plot area (below the xaxis). Is this  
> possible? Alternatively, is it possible to plot the x-axis at any  
> location instead of just TOP BOTTOM, AT_Y_ORIGIN?

Thanks to Vincent, you should be able to put the x-axis anywhere  
you'd like.  Since he knows more about it that I do, I'm going to let  
him provide the details.

Concerning your first question: we need to talk about clipping!   
Here's the tioga show_plot routine:

     def show_plot(bounds=nil,&cmd)
         trace_cmd_one_arg(@enter_show_plot_function,  
@exit_show_plot_function, bounds) {
             set_bounds(bounds)
             context { clip_to_frame; cmd.call(self) }
             show_plot_box
         }
     end

The show_plot command argument is called inside a context after first  
doing clip_to_frame.
That keeps the plot graphics inside the bounds, which is good. ; - )   
Except for cases like yours!
What you'd like to do is (perhaps) temporarily turn off the clipping  
so you can write your marker outside of the plot area.
However, in PostScript/PDF there is no way to enlarge a clipping  
region; you can only reduce it.

So what might work instead would be something like this:

     def my_show_plot(bounds=nil,&cmd)
         my_enter_show_plot_function(bounds)
         set_bounds(bounds)
         context { clip_to_frame; cmd.call(self) }
         context { my_unclipped_stuff }
         show_plot_box
         my_exit_show_plot_function (bounds)
     end

If you decide to give this approach a try, please let me know how it  
goes!

Cheers,
Bill

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From edder at tkwsping.nl  Mon May 19 13:57:46 2008
From: edder at tkwsping.nl (Edwin)
Date: Mon, 19 May 2008 18:57:46 +0100
Subject: [Tioga-users] Marker outside plot area
In-Reply-To: <462F4512-F3B9-458C-BCE9-FA27CB3D5FC7@kitp.ucsb.edu>
References: <op.ubeoevfu7lw9lz@localhost>
	<462F4512-F3B9-458C-BCE9-FA27CB3D5FC7@kitp.ucsb.edu>
Message-ID: <op.ubexikl0ngac0g@localhost>

On Mon, 19 May 2008 18:34:06 +0100, Bill Paxton <paxton at kitp.ucsb.edu>  
wrote:

> Thanks to Vincent, you should be able to put the x-axis anywhere you'd  
> like.  Since he knows > more about it that I do, I'm going to let him  
> provide the details.

Is this already possible in the current version of tioga? It was not  
mentioned at all in the documentation that I could find.

>     def my_show_plot(bounds=nil,&cmd)
>         my_enter_show_plot_function(bounds)
>         set_bounds(bounds)
>         context { clip_to_frame; cmd.call(self) }
>         context { my_unclipped_stuff }
>         show_plot_box
>         my_exit_show_plot_function (bounds)
>     end

 From reading the documentation I already gathered it had something to do  
with clip_to_frame, but was kinda afraid that show_plot would turn out to  
be quite complicated. Luckily, it is quite simple and easy to follow :) I  
ended up just doing the whole thing without clip_to_frame, by rewriting:

t.show_plot( mybounds ) do
	...
end

to:

cmd = Proc.new do
	...
end
t.set_bounds( mybounds )
t.context { cmd.call( self ) }
t.show_plot_box

That worked perfectly. (I think I am now calling cmd with another "self",  
but since I am not using it within the block anyway that does not matter  
in this case.)

Cheers,

Edwin


From davidm at astro.berkeley.edu  Mon May 19 14:06:47 2008
From: davidm at astro.berkeley.edu (David MacMahon)
Date: Mon, 19 May 2008 11:06:47 -0700
Subject: [Tioga-users] Marker outside plot area
In-Reply-To: <op.ubexikl0ngac0g@localhost>
References: <op.ubeoevfu7lw9lz@localhost>
	<462F4512-F3B9-458C-BCE9-FA27CB3D5FC7@kitp.ucsb.edu>
	<op.ubexikl0ngac0g@localhost>
Message-ID: <2520D5A8-6431-41FA-83BB-44F5B49A99A5@astro.berkeley.edu>

On May 19, 2008, at 10:57 , Edwin wrote:
> cmd = Proc.new do
> 	...
> end
> t.set_bounds( mybounds )
> t.context { cmd.call( self ) }
> t.show_plot_box

Hi, Edwin,

If that's the only use of your "cmd" Proc object, you can rewrite  
this as...

t.set_bounds( my_bounds )
t.context do
   ...
end
t.show_plot_box

My guess is that the "..." part uses the "t" variable, so you can  
either use it from the "closure" or you can pass it in explicitly by  
changing the t.context line to...

t.context do |t|

I'm not sure if there's any performance penalty for one way vs the  
other.

Dave


From paxton at kitp.ucsb.edu  Mon May 19 14:16:07 2008
From: paxton at kitp.ucsb.edu (Bill Paxton)
Date: Mon, 19 May 2008 11:16:07 -0700
Subject: [Tioga-users] Marker outside plot area
In-Reply-To: <op.ubexikl0ngac0g@localhost>
References: <op.ubeoevfu7lw9lz@localhost>
	<462F4512-F3B9-458C-BCE9-FA27CB3D5FC7@kitp.ucsb.edu>
	<op.ubexikl0ngac0g@localhost>
Message-ID: <7BDCEF57-2CD1-482F-8C25-F658460ADD74@kitp.ucsb.edu>


On May 19, 2008, at 10:57 AM, Edwin wrote:

> That worked perfectly. (I think I am now calling cmd with another  
> "self", but since I am not using it within the block anyway that  
> does not matter in this case.)


Great!

I'll add show_plot_without_clipping for the next release:

     def show_plot_without_clipping(bounds=nil,&cmd)
         trace_cmd_one_arg(@enter_show_plot_function,  
@exit_show_plot_function, bounds) {
             set_bounds(bounds)
             context { cmd.call(self) }
             show_plot_box
         }
     end

--Bill

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