| FG Bug -- Legend/Cleanup [message #90482] |
Wed, 04 March 2015 13:02  |
Matthew Argall
Messages: 286
Registered: October 2011
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Senior Member |
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So, here are a couple bugs I found a few days ago. I try to make a legend with the RELATIVE keyword, but it is rejected. I then destroy the window object, and the widget is destroyed except for the title bar and the buttons bar. When I click the "X" to close the remaining parts of the window, I get the PSTATE error. I have to reset the IDL session to get rid of the window pieces.
This happens any time legend does not like a keyword (i.e. if something is mistyped).
IDL> win = window()
IDL> p1 = plot(/TEST, /CURRENT)
IDL> leg1 = legend(TARGET=p1, POSITION=[1.0, 1.0], HORIZONTAL_ALIGNMENT='RIGHT', VERTICAL_ALIGNMENT='TOP', /RELATIVE)
% LEGEND: Unknown property: RELATIVE
% Execution halted at: $MAIN$
IDL> obj_destroy, win
[Attempt to close remaining part of the window by clicking "X"]
% Pointer type required in this context: PSTATE.
% Execution halted at: $MAIN$
IDL> help, !version
** Structure !VERSION, 8 tags, length=104, data length=100:
ARCH STRING 'x86_64'
OS STRING 'darwin'
OS_FAMILY STRING 'unix'
OS_NAME STRING 'Mac OS X'
RELEASE STRING '8.2'
BUILD_DATE STRING 'Apr 10 2012'
MEMORY_BITS INT 64
FILE_OFFSET_BITS
INT 64
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| Re: FG Bug -- Legend/Cleanup [message #90483 is a reply to message #90482] |
Wed, 04 March 2015 13:30  |
Matthew Argall
Messages: 286
Registered: October 2011
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Senior Member |
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Another bug:
In legend, I can specify an array of target objects, each with different text colors (actually, the text color keyword changes the sample line color, not the text color)
win = window()
p1 = plot(/TEST, /CURRENT, LAYOUT=[1,2,1], NAME='Plot 1', COLOR='Black')
p2 = plot(/TEST, /CURRENT, LAYOUT=[1,2,2], NAME='Plot 2', COLOR='Blue')
leg1 = legend(TARGET=[p1, p2], LABEL='Plot X', TEXT_COLOR=['Black', 'Blue'])
But if I try to specify two labels, I get an error
win = window()
p1 = plot(/TEST, /CURRENT, LAYOUT=[1,2,1], NAME='Plot 1', COLOR='Black')
p2 = plot(/TEST, /CURRENT, LAYOUT=[1,2,2], NAME='Plot 2', COLOR='Blue')
leg1 = legend(TARGET=[p1, p2], LABEL=['Plot X', 'Plot Y'], TEXT_COLOR=['Black', 'Blue'])
% Expression must be a scalar in this context: <BYTE Array[2]>.
I either have to change the label after the legend is created or add the label separately
leg1[1].LABEL = 'Plot Y'
leg1 -> Add, p2, LABEL='Plot Y', TEXT_COLOR='Blue'
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| Re: FG Bug -- Legend/Cleanup [message #90484 is a reply to message #90483] |
Wed, 04 March 2015 14:02 |
Matthew Argall
Messages: 286
Registered: October 2011
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Senior Member |
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Another bug:
I was working with sample data that resulted in a single-point average with standard deviation. I tried to create an error plot with a legend and got an error
win = window()
p1 = plot(/TEST, /CURRENT, LAYOUT=[1,2,1], NAME='Plot')
y = [5.0]
yerror = [0.329]
x = [1.0]
p2 = errorplot(x, y, yerror, LAYOUT=[1,2,2], NAME='ErrorPlot 2', /CURRENT, SYMBOL='Diamond', XRANGE=[0,2], YRANGE=[0,10])
leg1 = legend(TARGET=p1, LABEL='Plot X', TEXT_COLOR='Black')
leg1 -> Add, p2, LABEL='Plot Y', TEXT_COLOR='Blue'
% Variable is undefined: ONEWLEGENDITEMS.
% Execution halted at: $MAIN$
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| Re: FG Bug -- Legend/Cleanup [message #90492 is a reply to message #90484] |
Thu, 05 March 2015 06:55 |
lecacheux.alain
Messages: 325
Registered: January 2008
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Senior Member |
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On Wednesday, March 4, 2015 at 11:02:26 PM UTC+1, Matthew Argall wrote:
> Another bug:
>
> I was working with sample data that resulted in a single-point average with standard deviation. I tried to create an error plot with a legend and got an error
>
> win = window()
> p1 = plot(/TEST, /CURRENT, LAYOUT=[1,2,1], NAME='Plot')
>
> y = [5.0]
> yerror = [0.329]
> x = [1.0]
> p2 = errorplot(x, y, yerror, LAYOUT=[1,2,2], NAME='ErrorPlot 2', /CURRENT, SYMBOL='Diamond', XRANGE=[0,2], YRANGE=[0,10])
> leg1 = legend(TARGET=p1, LABEL='Plot X', TEXT_COLOR='Black')
> leg1 -> Add, p2, LABEL='Plot Y', TEXT_COLOR='Blue'
> % Variable is undefined: ONEWLEGENDITEMS.
> % Execution halted at: $MAIN$
I am not sure this is a bug.
If you call LEGEND this way:
leg1 = legend(TARGET=[p1,p2])
you can eventually force the labels by:
leg1[0].label = 'PLOT X'
leg1[1].label = 'PLOT Y'
Even better would be to initialize NAME in both plot calls accordingly.
alx.
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| Re: FG Bug -- Legend/Cleanup [message #90493 is a reply to message #90492] |
Thu, 05 March 2015 07:09 |
Matthew Argall
Messages: 286
Registered: October 2011
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Senior Member |
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> I am not sure this is a bug.
> If you call LEGEND this way:
> leg1 = legend(TARGET=[p1,p2])
> you can eventually force the labels by:
> leg1[0].label = 'PLOT X'
> leg1[1].label = 'PLOT Y'
> Even better would be to initialize NAME in both plot calls accordingly.
Yes, but having the object's name be the label is not ideal, since the only way I can retrieve plots from a window object is by their name. Let's say
name = '$\it E_n(z) = \int_{1}^{\infty} e^{-zt} t^{-n} dt, \Re(z)\geq 0$'
this is ok for the legend. But let's say I am carrying around the window object and want to retrieve the legend. I would then have to remember the name each time:
theLegend = win['$\it E_n(z) = \int_{1}^{\infty} e^{-zt} t^{-n} dt, \Re(z)\geq 0$']
I would much rather have a name that means something
name = 'theory'
theLegend = win['theory']
This goes double since I do not know how to get a name of child graphics objects. Something like this would be nice:
child_names = win -> GetNames()
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