gnuplot

问题 sorry, I am asking multiple questions. I have a case.dat file which is having multiple columns and I want to extract array of the data according to colum 2 in the gnuscript. I tried with below script but it is giving me error array="" do for [i=300:800:100] { # I mean start:end:increment. so it should read 300, 400, 500, 600, 700, 800 here val ="grep i case.dat" # Want to store the command in a valuel/variable print val > i.dat #Here I need to store the data in i.dat } error line 45:

问题 I have a data file with interleaving data rows from different devices. Now, I'd like to plot data from one devices with linepoints and use this to filter only the device of interest: plot 'datafile' using (<someCondition> ? $1 : 1/0):2 Now, gnuplot does not connect the points because there is always some invalid data inbetween. Is it possible to make gnuplot to connect my points? By the way: This is a Windows machine, so an external sed/awk/whatever command is no option. 回答1: Since gnuplot

问题 I'm trying to generate a graph with gnuplot but it seems that it doesn't show the correct values: Data are: 03/18/2014 15:00:50 32,4 03/18/2014 14:00:48 32,4 03/18/2014 13:00:48 32,42 03/18/2014 12:00:44 32,4 03/18/2014 11:00:42 122,2 03/18/2014 10:00:47 22,4 03/18/2014 09:00:37 53,9 03/18/2014 08:00:35 14,2 The sh is: #!/usr/bin/gnuplot set title "Plot x^2" set terminal png set output "output.png" set xlabel "X" set ylabel "Y" #set datafile sep ',' set xdata time set timefmt '%m/%d/%Y %H:%M:

问题 I have a data a follows: y1 x1 x2 125 100 1 130 90 2 136 85 3 143 70 4 145 65 5 I would like to plot it in gnuplot as in the figure. I used the procedure mentioned here Gnuplot: Plot x2 axis with respect to x1 axis , but it is plotting the x2 differently. 回答1: Plot your data as usual on the x1 and y1 axes, but place additional labels on the x2-axis with x2tic(3) : set xrange [*:*] reverse set x2tics set xtics nomirror plot 'file.dat' using 2:1:x2tic(3) with linespoints pt 7 notitle If you don

问题 I have a data file in which a floating-point time column increases from zero to some large value. Each time-point is associated with a data point. The time points also happen to correspond to months, such that 0=Jan, 1=Feb, ..., 11=Dec, 12=Jan, 13=Feb, ... I'd like to plot this data such that I see the month names on the X-axis instead of 0-* . Is there a way to do this? If it's helpful, I can also pre-generate the month name in the data. Sample data, with the possibly-helpful month name

问题 I want plot karplus equation f(t)=a*cos(t+o)**2 + b*cos(t+o) + c with gnuplot for different value of a, b, c, o values. In particular the parameters a, b, c, o have tabular form (in file data.dat): a b c o 1 2 3 60 4 5 6 180 -3 -5 -9 -120 and t has range from -180 to 180 for each row in data.dat file. Can you help me? Thanks everyone. Lucio 回答1: AFAIK it is not possible to have a "parameter file" with different parameters to plot in a function since the plot command can either take a function

问题 I'm trying to color a plot and a fit in gnuplot in different colors, but it doesn't work: set ylabel "s in m" set xlabel "t in s" unset key set style line 1 lt 2 lc rgb "red" lw 3 set style line 2 lt 2 lc rgb "orange" lw 2 plot "-" with lines ls1 0 0 1 4.2 2 7.9 3 11.7 4 16.3 fit "-" with lines ls2 0 0 1 4.2 2 7.9 3 11.7 4 16.3 Does anybody have an idea what I am doing wrong? 回答1: There are several things you are doing wrong: The fit command is a bit different from the plot command. You must

问题 I'm using a gnuplot script that involves several fits, on large data samples. Thus fit has to scale up its max number of data points several times, and it prints on the output Max. number of data points scaled up to: 3072 Max. number of data points scaled up to: 4608 Max. number of data points scaled up to: 6912 Max. number of data points scaled up to: 10368 Max. number of data points scaled up to: 15552 Max. number of data points scaled up to: 23328 I would like to avoid that since it makes

问题 I am trying to get a contour map using gnuplot using pm3d and view map while everything else is fine, I cannot convert it to the colorscheme I want. The present picture, using default colour scheme is attached. But, it will be great if I can have it in Blues's sheds, from Dark Blue to lighter. I was trying to follow instruction given here, but failed. Kindly help. 回答1: See the gnuplot documentation about set palette : set palette defined (0 'dark-blue', 1 'light-blue') test palette or set

问题 I am trying to get a contour map using gnuplot using pm3d and view map while everything else is fine, I cannot convert it to the colorscheme I want. The present picture, using default colour scheme is attached. But, it will be great if I can have it in Blues's sheds, from Dark Blue to lighter. I was trying to follow instruction given here, but failed. Kindly help. 回答1: See the gnuplot documentation about set palette : set palette defined (0 'dark-blue', 1 'light-blue') test palette or set