Graphics with GLE - Revision history

Sfomel at 22:53, 15 September 2010

2010-09-15T22:53:05Z

← Older revision		Revision as of 22:53, 15 September 2010
Line 2:		Line 2:
	plots from user-defined scripts. It has both very basic drawing primitives and more advanced canvases. It is similar to the vplot core library, with the difference is that plotting templates are saved in script files instead of C programs. Here is an example of a SConstruct drawing a simple 2D analytic function in isometric view:		plots from user-defined scripts. It has both very basic drawing primitives and more advanced canvases. It is similar to the vplot core library, with the difference is that plotting templates are saved in script files instead of C programs. Here is an example of a SConstruct drawing a simple 2D analytic function in isometric view:
	<python>		<python>
	from ~~rsfproj~~ import *		from rsf.proj import *

	o1=-2		o1=-2

Sfomel at 13:15, 13 September 2009

2009-09-13T13:15:54Z

← Older revision		Revision as of 13:15, 13 September 2009
Line 58:		Line 58:
	end surface		end surface
	</pre>		</pre>
	"scons lock" works just fine and the resulted image is ready to be used in a paper with the regular macros like <tt>\plot</tt> or <tt>\multiplot</tt> .		<b>scons lock</b> works just fine and the resulted image is ready to be used in a paper with the regular macros like <tt>\plot</tt> or <tt>\multiplot</tt> .
	The only problem that appears is when "scons view" is run. It tries to run ~~xtpen~~ to view the resulted PDF file and fails, of course. But other than that, the result (figure below) shows a nice isometric plot, which can be easily reproduced in a regular Madagascar fashion.		The only problem that appears is when <b>scons view</b> is run. It tries to run <tt>sfpen</tt> to view the resulted PDF file and fails, of course. But other than that, the result (figure below) shows a nice isometric plot, which can be easily reproduced in a regular Madagascar fashion.

	[[Image:GLE_example.png]]		[[Image:GLE_example.png]]

Nick: disfil instead of /bin/cat, as in Vladimir's 2009-04-05 e-mail to rsf-user

2009-06-26T08:17:41Z

disfil instead of /bin/cat, as in Vladimir's 2009-04-05 e-mail to rsf-user

← Older revision		Revision as of 08:17, 26 June 2009
Line 22:		Line 22:
	Flow('cosxpy.z','cosxpy',		Flow('cosxpy.z','cosxpy',
	'''		'''
	disfil number=n col=%d \|		disfil number=n col=%d
	~~(echo~~ "! nx %d ny %d xmin %g xmax %g ymin %g ymax %g" ~~&& /bin/cat)~~		header="! nx %d ny %d xmin %g xmax %g ymin %g ymax %g"
	''' % (n2,n1,n2,o1,o1+(n1-1)d1,o2,o2+(n2-1)d2))		''' % (n2,n1,n2,o1,o1+(n1-1)d1,o2,o2+(n2-1)d2))

Nick: inserted figure

2009-06-25T22:56:26Z

inserted figure

← Older revision		Revision as of 22:56, 25 June 2009
Line 59:		Line 59:
	</pre>		</pre>
	"scons lock" works just fine and the resulted image is ready to be used in a paper with the regular macros like <tt>\plot</tt> or <tt>\multiplot</tt> .		"scons lock" works just fine and the resulted image is ready to be used in a paper with the regular macros like <tt>\plot</tt> or <tt>\multiplot</tt> .
	The only problem that appears is when "scons view" is run. It tries to run xtpen to view the resulted PDF file and fails, of course. But other than that, the result shows a nice isometric plot, which can be easily reproduced in a regular Madagascar fashion.		The only problem that appears is when "scons view" is run. It tries to run xtpen to view the resulted PDF file and fails, of course. But other than that, the result (figure below) shows a nice isometric plot, which can be easily reproduced in a regular Madagascar fashion.

	~~XXXXXXXXXX Figure from 2009-04-03 message to rsf-user here XXXXXXXXXXXXXXXXXXX~~		[[Image:GLE_example.png]]

Nick: New page: The [http://glx.sourceforge.net Graphics Layout Engine] is a multi-platform open-source package that can create a whole variety of plots from user-defined scripts. It has both very basic d...

2009-06-23T23:58:02Z

New page: The [http://glx.sourceforge.net Graphics Layout Engine] is a multi-platform open-source package that can create a whole variety of plots from user-defined scripts. It has both very basic d...

New page

The [http://glx.sourceforge.net Graphics Layout Engine] is a multi-platform open-source package that can create a whole variety of
plots from user-defined scripts. It has both very basic drawing primitives and more advanced canvases. It is similar to the vplot core library, with the difference is that plotting templates are saved in script files instead of C programs. Here is an example of a SConstruct drawing a simple 2D analytic function in isometric view:
<python>
from rsfproj import *

o1=-2
o2=-2
n1=41
n2=41
d1=0.1
d2=0.1

Flow('cosxpy',None,
'''
math o1=%g o2=%g n1=%d n2=%d d1=%g d2=%g
output="cos(x1*x1+x2*x2)*exp(-0.1*(x1*x1+x2*x2))"
''' % (o1,o2,n1,n2,d1,d2))

Result('cosxpy','grey color=j')

# Prepare data for GLE
Flow('cosxpy.z','cosxpy',
'''
disfil number=n col=%d |
(echo "! nx %d ny %d xmin %g xmax %g ymin %g ymax %g" && /bin/cat)
''' % (n2,n1,n2,o1,o1+(n1-1)*d1,o2,o2+(n2-1)*d2))

# Call GLE
Result('cosxpy_iso','cosxpy.gle cosxpy.z',
'''
gle -device pdf -output ${TARGETS[0]} ${SOURCES[0]}
''',suffix='.pdf',stdin=0,stdout=0)

End()
</python>
The trick is wrapped into the two last <tt>Result()</tt> and <tt>Flow()</tt> statements. The Flow generates a special ASCII file with function values, which will be later used by GLE. The Result actually calls GLE and makes it write a PDF file. The drawing script is contained in another file -- <tt>cosxpy.gle</tt> , which has a rather simple format:
<pre>
size 10 10

set font texcmr hei 0.5 just tc

begin surface
size 10 10
data "cosxpy.z"
title "Hat function (3D)"
xtitle "X-axis" hei 0.4 dist 0.7
ytitle "Y-axis" hei 0.4 dist 0.7
ztitle "Z-axis" hei 0.4 dist 0.9
top color red
underneath color blue
base xstep 1 ystep 1
zaxis min -1.5 max 1.5 hei 0.35
xaxis hei 0.35 dticks 1
yaxis hei 0.35 dticks 1
xlines on
ylines on
rotate 45 60 0
end surface
</pre>
"scons lock" works just fine and the resulted image is ready to be used in a paper with the regular macros like <tt>\plot</tt> or <tt>\multiplot</tt> .
The only problem that appears is when "scons view" is run. It tries to run xtpen to view the resulted PDF file and fails, of course. But other than that, the result shows a nice isometric plot, which can be easily reproduced in a regular Madagascar fashion.

XXXXXXXXXX Figure from 2009-04-03 message to rsf-user here XXXXXXXXXXXXXXXXXXX