graphing some experimental data

graphing some experimental data

Post by Agostino N » Tue, 17 Jun 2008 22:37:09


Hello everyone
i am in need to make a splot of some finite volume elements data, i
divided correctly the input text file, and is correctly plotted, however,
when i do a pm3d and contour plot, they don't look correctly:

There is a large area in the graph that has 0 value, the graph doesn't
show a vertical surface, but a ripid one, it needs to be totally
vertical..
i don't know if there is sort of interpolation but i wish to turn it off
in order to have correct contour plots..

i don't know if i am clear enough, but is possible to see the input file
over here:
http://www.yqcomputer.com/

thanks everyone who can help me since i couldn't find a way to correct
this behavior

--
"Noi fummo i gattopardi,i leoni.Chi ci sostituir saranno gli
sciacalli,le iene.E tutti quanti,gattopardi,leoni,sciacalli o
pecore,continueremo a crederci il sale della terra." GTdL
Agostino Nevermore
 
 
 

graphing some experimental data

Post by SGFucy1CZX » Wed, 18 Jun 2008 05:56:17


No, it doesn't. gnuplot didn't compute data with verticals. Plotting
them as such would be a lie.


Of course there is interpolation! How else did you think could contour
lines be placed, even when the contour value is never contained anywhere
in the data?


I'm afraid you have the wrong idea of what a "correct contour plot" is.

 
 
 

graphing some experimental data

Post by Agostino N » Wed, 18 Jun 2008 16:17:13

Il Mon, 16 Jun 2008 22:56:17 +0200, Hans-Bernhard Brker ha scritto:

I solved the problem by editing the data file in order to make the
"interpolation" fall in an area of not interest then editing the image
thanks

--
"Noi fummo i gattopardi,i leoni.Chi ci sostituir saranno gli
sciacalli,le iene.E tutti quanti,gattopardi,leoni,sciacalli o
pecore,continueremo a crederci il sale della terra." GTdL
Agostino Nevermore