gnuplot

问题 I am trying to draw 3d vectors from two different files to color the vectors in the first file with black and the others with red. Does anyone have an idea about how to achieve that? 回答1: This is a pretty easy one. First set up your arrow styles: set style arrow 1 linecolor rgb "red" set style arrow 2 linecolor rgb "black" Now make your plots: splot 'datafile1' u 1:2:3:4:5:6 with vectors arrowstyle 1, \ 'datafile2' u 1:2:3:4:5:6 with vectors arrowstyle 2 Of course, this assumes your datafiles

问题 I am trying to draw 3d vectors from two different files to color the vectors in the first file with black and the others with red. Does anyone have an idea about how to achieve that? 回答1: This is a pretty easy one. First set up your arrow styles: set style arrow 1 linecolor rgb "red" set style arrow 2 linecolor rgb "black" Now make your plots: splot 'datafile1' u 1:2:3:4:5:6 with vectors arrowstyle 1, \ 'datafile2' u 1:2:3:4:5:6 with vectors arrowstyle 2 Of course, this assumes your datafiles

问题 I would like to plot data with lines and points with different colors. It seems to exist different solutions: https://stackoverflow.com/a/31887351/4373898 , https://stackoverflow.com/a/31562632/4373898 https://gnuplot-tricks.blogspot.fr/2009/12/defining-some-new-plot-styles.html However, none of them handle the key properly, showing only one entry with both the line and a point with different colors... Is there another way to achieve it? This is minimal (non-)working example. set key bottom

问题 I am trying to plot 5 graph in vertically stacked pattern in gnuplot. There are many horizontally (x axis shared) graphs. I tried to adapt their solution. But somehow not works. Here is code. set key bottom center NX=5; NY=1 DX=0.01; DY=0.01; SX=0.25; SY=0.85 set bmargin DX; set tmargin DX; set lmargin DY; set rmargin DY set size SX*NX+DX*4,SY*NY+DY*4 set multiplot layout 1,5 #title 'Distance from inlet boundary' font #'areal,18' #1set title 'sa4(210)' set size SX,SY set label 1 '50m' at 1.5,

问题 I want to do a gif animation with gnuplot so I wrote: set terminal gif size 1000,800 animate delay 6 set output 'foobar.gif' set xrange [0:64] set yrange [0:64] do for [i=100:5000:100] { plot sprintf('folder\name%d.dat',i) u 2:3:(20*$5):(20*$6) with vectors filled head lw 3, sprintf('folder\name%d.dat',i) u 2:3 with points pt 7 ps 2 } The problem is that, although it doesn't show any error nor warning, when I open the gif file with chrome or ie it doesn't play the gif. What's wrong with it? I

问题 My data file is: ============ This is your required output Range: -42.3732 666.3634eV Yi, Yf > DATA-point FIX: 0.0000 0.0000 0.0000 x LIST 0.0000 DATA-point FIX: 0.5000 0.0000 0.0000 x LIST 0.5000 DATA-point FIX: 0.7500 0.3750 0.2641 x LIST 1.0224 DATA-point FIX: 0.0000 0.0000 0.0000 x LIST 1.9015 DATA-point FIX: 0.3750 0.3750 0.5282 x LIST 2.6500 DATA-point FIX: 0.5000 0.5000 0.3522 x LIST 2.8995 DATA-point FIX: 0.0000 0.0000 0.0000 x LIST 3.6895 DATA-point FIX: 0.5000 0.0000 0.3522 x LIST 4

问题 I am trying to fit the power curve into my data with following gnuplot code. set termoption enhanced f(x) = a*x**b; fit f(x) 'data.txt' via a,b plot 'data.txt' with points title 'data points', \ f(x) with lines title sprintf('power fit curve f(x) = %.2f·x^{%.2f}', a, b) It works fine for non-redundant data for x axis. (no repeats). But for following type of data: It is fitting the curve only to points of first x value i.e. 1, ( Starred ). and not to the whole dataset. Data: 1 2194* 1 2675* 1

问题 I have two different .txt files with x and y coordinates of equal number of samples in both. File 1 x y 1 2 5 4 4 6 File 2 x y 5 6 3 4 2 3 I want to connect each of these points inFile 1 with the corresponding points in File 2. I know to draw an arrow between two points it is set arrow from (x,y) to (c,d) But how do I get the coordinates of these points from two different files to draw connecting lines/ arrows? 回答1: Something like this: plot "< paste file1.data file2.data" with vectors 回答2:

问题 I've just started using Octave. When I start octave and try to plot something, the plot works but I get the following warnings repeated many times: warning: ft_render: unable to load appropriate font warning: ft_render: invalid bounding box, cannot render More warnings appear if I click and drag the plot or even mouse-over it. If I then try to add an xlabel or title, I get a segfault and octave quits. The default graphics_toolkit is fltk, which I found by starting octave and running graphics

问题 I'm writing a batch file which will also generate a gnuplot graph from a dat file. I wish to call gnuplot from the command line, using the gnuplot "gnu" script I have written, and save the output graph to an image. Something like: gnuplot.exe script.gnu > image.png Any ideas? 回答1: Simply putting the following line will make gnuplot to return png-format bytecode. Thus, you can redirect the output to a png-file. set terminal png 回答2: You don't have to redirect the output from gnuplot into an