gnuplot

问题 Can someone elaborate in more detail on the set nonlinear and set link functions. The documentation is too brief on those topics. Specifically, for set link , why is in necessary to spell out the inverse tranformation? (is it just because gnuplot does not have the capability to determine the inverse tranformation or is there any deeper reason?) What if as inverse I do provide a completely different function (not being an inverse)? e.g. I would assume that in the following example, at least

问题 How do you convert a string to lowercase in gnuplot? This is a gnuplot string handling question. Example:- I wish to check a user typed parameter in a gnuplot script.... if (tolower(ARG2) == "ohms") {..... so by accepting "ohms", "Ohms", or "OHMS". The preference is to not need to use an external "system" command so that the script is more portable. My current best solution is arg2 = system("awk 'BEGIN { print toupper(\"".ARG2."\") }'") and then test the new string variable "arg2", but awk

问题 How do you convert a string to lowercase in gnuplot? This is a gnuplot string handling question. Example:- I wish to check a user typed parameter in a gnuplot script.... if (tolower(ARG2) == "ohms") {..... so by accepting "ohms", "Ohms", or "OHMS". The preference is to not need to use an external "system" command so that the script is more portable. My current best solution is arg2 = system("awk 'BEGIN { print toupper(\"".ARG2."\") }'") and then test the new string variable "arg2", but awk

问题 I am simulating something and want to figure out the influence of two parameters. Therefore I vary them both and look for the result on each pair of parameter values and get a result like: 0 1000 2000 3000 4000 5000 .... 0 13.2 14.8 19.9 25.5 27.3 ... 1000 21.3 25.9 32.3 etc. 2000 etc. 3000 4000 .... To visualize them, I use gnuplot, creating a heatmap, which works perfectly fine, showing me colors and height: reset set terminal qt set title "Test" unset key set tic scale 0 set palette

问题 I'm trying to create a wrapper for gnuplot based in Julia to automate my plots. My goal is to give Julia the file names to plot, the type of line style that I want to use and the column to plot. For example, if I have files test1 and test2 , both with 3 columns and headers "time,COL1,COL2" and custom line styles 1 and 2, I would write this: gnuplot -c gnuplot-script.gnuplot "test1 test2" "COL1 COL2" "1 2" To plot time vs COL1 of test1 and time vs COL2 of test2 using the line styles 1 and 2,

问题 I'm trying to create a wrapper for gnuplot based in Julia to automate my plots. My goal is to give Julia the file names to plot, the type of line style that I want to use and the column to plot. For example, if I have files test1 and test2 , both with 3 columns and headers "time,COL1,COL2" and custom line styles 1 and 2, I would write this: gnuplot -c gnuplot-script.gnuplot "test1 test2" "COL1 COL2" "1 2" To plot time vs COL1 of test1 and time vs COL2 of test2 using the line styles 1 and 2,

问题 I've this data : 2020-04;26.94 2020-05;26.92 2020-06;26.89 2020-07;27.01 2020-08;26.73 2020-09;26.72 I use this gnuplot script ( I'm bound to use the 4.6 version of Gnuplot ) : reset FILE = "LINEARFIT.txt" set datafile separator ";" set xdata time set timefmt "%Y-%d" set format x "%Y\n%d" plot FILE u (StartDate=timecolumn(1)):0 index 0 every ::0:0:0 EndDate = strptime("%Y-%d","2020-20") f(x) = a*(x-StartDate) + b FIT_LIMIT = 1e-8 fit f(x) FILE u (timecolumn(1)):2 via a,b set terminal png

问题 I've this data : 2020-04;26.94 2020-05;26.92 2020-06;26.89 2020-07;27.01 2020-08;26.73 2020-09;26.72 I use this gnuplot script ( I'm bound to use the 4.6 version of Gnuplot ) : reset FILE = "LINEARFIT.txt" set datafile separator ";" set xdata time set timefmt "%Y-%d" set format x "%Y\n%d" plot FILE u (StartDate=timecolumn(1)):0 index 0 every ::0:0:0 EndDate = strptime("%Y-%d","2020-20") f(x) = a*(x-StartDate) + b FIT_LIMIT = 1e-8 fit f(x) FILE u (timecolumn(1)):2 via a,b set terminal png

问题 I am new to gnuplot and I would appreciate some help to understand how I can plot a timeseries histogram My data looks like this: #Date Time WKB 20130206 11:45:57 4544 20130206 11:45:57 5113 20130206 11:45:57 5117 20130206 11:45:57 5123 20130206 11:45:57 5129 20130206 11:45:57 5151 ................... I have data around 2 days. What I need is to plot following charts: Average of WKB for x minues (for e.g. 5 minutes) in histogram Cumulative sum of WKB for x minues (for e.g. 5 minutes) in

问题 I am new to gnuplot and I would appreciate some help to understand how I can plot a timeseries histogram My data looks like this: #Date Time WKB 20130206 11:45:57 4544 20130206 11:45:57 5113 20130206 11:45:57 5117 20130206 11:45:57 5123 20130206 11:45:57 5129 20130206 11:45:57 5151 ................... I have data around 2 days. What I need is to plot following charts: Average of WKB for x minues (for e.g. 5 minutes) in histogram Cumulative sum of WKB for x minues (for e.g. 5 minutes) in