I have to plot contour plots in gnuplot with labels but without dots. I tried several steps to avoid dots in my plot. I want my plot with contour values in plot. For that I used splot with labels. But gnuplot plots dots in plot. how this can be avoided.
splot 'DM_Plot.txt' using 1:($2/1000):3,'DM_Plot.txt' using 1:($2/1000):3 with labels
I think we need to see more of the command sequence. It is not obvious that the dots visible in your figure come from the "splot" command. "set grid dashtype '.'" could produce such a thing. Do you have a "set grid" command?
I would guess that the sequence of commands you need is something like
unset grid
set pm3d explicit
set contours
splot 'DM_Plot.txt' using 1:($2/1000):3 with pm3d, \
'DM_Plot.txt' using 1:($2/1000):3 with labels
Does that match what you tried?
Related
I want to make a program that solves the Rubik's cube.
Basically, I want the easiest way to get an output like this:
G G Y
W W Y
B G G
From an image like this:
.
Using only colors for the recognition is a very problematic because the colors are very sensitive to change in the light of the scene. Therefor if you insist on using only color i would do the following:
Take several images
For each image identify the colors and sample them.
Use the White rectangle to do white balancing.
Correct the sampled colors according to the white balancing.
For a new image first do white balancing second use the sampled values to segment the image according to each color.
My suggestion is use also the shape of the rectangles and not only the color for the segmentation.
I'm trying to rotate 45ยบ a heat map coming from a matrix. The problem when rotating the discrete data is that the plot exceeds the window's size, reaching labels and tics place. Any idea or alternative to solve the problem?
Main code
set xrange[-20:20]
set yrange[30:50]
plot "test.txt" u ($2-$1+1):($2+$1):3 matrix with image notitle
And what I
obtain. The data file http://www.filedropper.com/test_146
I would suggest an alternative using splot with pm3d because the set pm3d has the option clip1in and clip4in which tells gnulpot which qudrangles to plot, but is available:
set pm3d map clip4in corners2col c1
set yrange[10:*]
splot 'test.txt' u ($2-$1+1):($2+$1):3 matrix with pm3d notitle
It will show some spurious triangles:
If you want to go for an interpolation, have a look at this question
Pay attention that splot [...] with pm3d will draw the colors of the quadrangles, so that if your matrix s NxM, you'll get (N-1)x(M-1). On the other hand using plot [...] with image you'll get NxM quandrangles. (see help image).
I have one question. How to bold legend and axis in 3d scatter plot in Matlab?
Anyone can help me.
Thank you
Run this after the figure is created, it sets all text elements of the current figure to bold:
set(findall(gcf,'type','text'), 'FontWeight','bold')
It is not 3D scatter specific and is answered here as well: Changing Fonts in Matlab Plots
i am trying to plot a contour from a gridded data file called 'sample'. This script works fine for me:
set xrange[1:1e2]; set yrange[1:1e2]; set log;
set view map; unset surface
set style textbox opaque margins 0.5, 0.5 noborder
set contour base
set cntrlabel format '%5.3g' font ',7'
set cntrparam levels discrete 1e40,1e42,1e44
splot 'sample' u ($1*1e27):($2*1e18):3 wl
it plots a 2D plot with contour lines. All fine.
If i only dare to continue the plotting line with
'' u ($1*1e27):($2*1e18):3 with labels boxed notitle
to add labels to the contour lines, it takes around 15 minutes to produce a blank plot. Using gnuplot examples on sourceforge, it works.
Have you ever experienced something similar?
Many thanks in advance
I have a matrix which I display with imagesc. Now I'm asked to make an "interpolated" version (i.e. display with smoother colors).
While I could compute a larger interpolated matrix, I seem to remember that there was a command to switch between two such display modes, either a little command in the style of axis equal or some Property - but I just cannot find it.
You may want to use pcolor instead of imagesc and set the shading properties to interp.
Note that pcolor and imagesc will not display your data in the same way but the shading property is only available for faceted plots.
However this is only a display solution, you will have to interpolate your data if you want to work with it afterwards.