Graphics with gnuplot - Revision history

Sfomel: /* Plotting without temporary ASCII files */

2010-09-15T22:53:31Z

Plotting without temporary ASCII files

← Older revision		Revision as of 22:53, 15 September 2010
Line 108:		Line 108:

	<python>		<python>
	from ~~rsfproj~~ import *		from rsf.proj import *

	o1=-2		o1=-2

Sfomel: /* Plotting using temporary ASCII files */

2010-09-15T22:53:18Z

Plotting using temporary ASCII files

← Older revision		Revision as of 22:53, 15 September 2010
Line 4:		Line 4:
	Example SConstruct, that follows the one in the [[Graphics with GLE \| GLE example]]:		Example SConstruct, that follows the one in the [[Graphics with GLE \| GLE example]]:
	<python>		<python>
	from ~~rsfproj~~ import *		from rsf.proj import *

	o1=-2		o1=-2

Nick: /* Plotting without temporary ASCII files */

2009-06-26T07:51:19Z

Plotting without temporary ASCII files

← Older revision		Revision as of 07:51, 26 June 2009
Line 135:		Line 135:
	</python>		</python>

	To work with this SConstruct, the gnuplot scripts shown in the previous section (<tt>cosxpy_*.gp</tt>) must be modified by ~~changing the last line from~~		To work with this SConstruct, the gnuplot scripts shown in the previous section (<tt>cosxpy_*.gp</tt>) must be modified by replacing <tt>splot "cosxpy.z"</tt> with <tt>splot "-"</tt> in their last line.
	<~~pre~~>
	splot "cosxpy.z" ~~matrix ...~~
	</~~pre~~>
	to
	<~~pre~~>
	splot "-" ~~matrix ...~~
	</~~pre~~>

Nick: /* Plotting without temporary ASCII files */

2009-06-26T07:49:36Z

Plotting without temporary ASCII files

← Older revision		Revision as of 07:49, 26 June 2009
Line 134:		Line 134:
	End()		End()
	</python>		</python>

			To work with this SConstruct, the gnuplot scripts shown in the previous section (<tt>cosxpy_*.gp</tt>) must be modified by changing the last line from
			<pre>
			splot "cosxpy.z" matrix ...
			</pre>
			to
			<pre>
			splot "-" matrix ...
			</pre>

Nick at 07:45, 26 June 2009

2009-06-26T07:45:26Z

@@ Line 1: / Line 1: @@
 [http://www.gnuplot.info/ Gnuplot] is included by default in the vast majority of Linux distributions and is also more flexible in certain ways
 than GLE.
+==Plotting using temporary ASCII files==
 Example SConstruct, that follows the one in the [[Graphics with GLE | GLE example]]:
 <python>
@@ Line 103: / Line 103: @@
 [[Image:Gnuplot_surf.png]]

Nick at 07:42, 26 June 2009

2009-06-26T07:42:06Z

← Older revision		Revision as of 07:42, 26 June 2009
Line 21:		Line 21:
	Result('cosxpy','grey color=j')		Result('cosxpy','grey color=j')

	# Prepare ~~data~~ for Gnuplot		# Prepare input for Gnuplot (ASCII file with data)
	Flow('cosxpy.z','cosxpy',		Flow('cosxpy.z','cosxpy',
	'''		'''

Nick: Correction from 2009-04-04 Vladimir rsf-user e-mail

2009-06-25T23:19:49Z

Correction from 2009-04-04 Vladimir rsf-user e-mail

← Older revision		Revision as of 23:19, 25 June 2009
Line 24:		Line 24:
	Flow('cosxpy.z','cosxpy',		Flow('cosxpy.z','cosxpy',
	'''		'''
	disfil number=n col=%d ~~\| /bin/cat~~		disfil number=n col=%d
	''' % n2)		''' % n2)

Nick: added images

2009-06-25T23:16:47Z

added images

← Older revision		Revision as of 23:16, 25 June 2009
Line 56:		Line 56:
	splot "cosxpy.z" matrix with lines notitle		splot "cosxpy.z" matrix with lines notitle
	</pre>		</pre>

			[[Image:Gnuplot_bsurf.png]]

	'''cosxpy_cont.gp''':		'''cosxpy_cont.gp''':
Line 77:		Line 79:
	splot "cosxpy.z" matrix with lines notitle		splot "cosxpy.z" matrix with lines notitle
	</pre>		</pre>

			[[Image:Gnuplot_cont.png]]

	'''cosxpy_surf.gp''':		'''cosxpy_surf.gp''':
Line 97:		Line 101:
	splot "cosxpy.z" matrix with pm3d notitle		splot "cosxpy.z" matrix with pm3d notitle
	</pre>		</pre>

			[[Image:Gnuplot_surf.png]]

Nick: inserted gnuplot scripts

2009-06-25T23:06:02Z

inserted gnuplot scripts

@@ Line 2: / Line 2: @@
 than GLE.
-Example SConstruct:
+Example SConstruct, that follows the one in the [[Graphics with GLE | GLE example]]:
 <python>
 from rsfproj import *
@@ Line 35: / Line 35: @@
 End()
 </python>
-On some systems, the actual executable is not gnuplot, but gnuplot-minimal. Another dependency is the epstopdf utility, which is a part of LaTeX installation, usually. Gnuplot scripts can render the isometric view in slightly different ways:
+On some systems, the actual executable is not gnuplot, but gnuplot-minimal. Another dependency is the epstopdf utility, which is a part of LaTeX installation, usually. Gnuplot scripts can render the isometric view in slightly different ways. Three examples of Gnuplot scripts, and the images produced by each, follow:
 '''cosxpy_bsurf.gp''':
@@ Line 57: / Line 57: @@
 </pre>
-To be continued with content from 2009-04-04 rsf-user message from Vladimir
+'''cosxpy_cont.gp''':

Nick: New page: [http://www.gnuplot.info/ Gnuplot] is included by default in the vast majority of Linux distributions and is also more flexible in certain ways than GLE. Example SConstruct: from...

2009-06-23T23:52:53Z

New page: [http://www.gnuplot.info/ Gnuplot] is included by default in the vast majority of Linux distributions and is also more flexible in certain ways than GLE. Example SConstruct: <python> from...

New page

[http://www.gnuplot.info/ Gnuplot] is included by default in the vast majority of Linux distributions and is also more flexible in certain ways
than GLE.

Example SConstruct:
<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 Gnuplot
Flow('cosxpy.z','cosxpy',
'''
disfil number=n col=%d | /bin/cat
''' % n2)

# Draw surfaces
Result('cosxpy_iso','cosxpy_bsurf.gp cosxpy.z',
'''
gnuplot | epstopdf --filter
''',suffix='.pdf')

End()
</python>
On some systems, the actual executable is not gnuplot, but gnuplot-minimal. Another dependency is the epstopdf utility, which is a part of LaTeX installation, usually. Gnuplot scripts can render the isometric view in slightly different ways:

'''cosxpy_bsurf.gp''':
<pre>
set terminal postscript eps enhanced color
set output

set title "Hat function (3D)"
set xtics ("-2" 0, "-1" 10, "0" 20, "1" 30, "2" 40) out
set ytics ("-2" 0, "-1" 10, "0" 20, "1" 30, "2" 40) out
set ztics out
set zrange [-1.5:1.5]
set ztics 0.5
set xlabel "X-axis"
set ylabel "Y-axis"
set zlabel "Z-axis" offset 3,-1
set ticslevel 0.5
set palette defined (-1 "blue", 0 "white", 1 "red")
set pm3d at b
splot "cosxpy.z" matrix with lines notitle
</pre>

To be continued with content from 2009-04-04 rsf-user message from Vladimir