gnuplot

问题 I want to plot m*n matrix, each element of which is an rgb triple, like in the following gnuplot code snippet (rgb matrix of 3*3 ): $cross << EODcross 255 0 0 0 0 0 255 0 0 0 0 0 0 0 0 0 0 0 255 0 0 0 0 0 255 0 0 EODcross Black cross on red background. I can change delimiters between columns and color components, if needed. Can I achieve the desired avoiding set palette rgbformulae i,j,k and directly using $cross data? Something like: plot '$cross' matrix with image rgb If not, I can pass

问题 Is this possible in gnuplot? How more energie how harder the color, look the example. plot for [i=1:16] file u 1:($10/i):((i*2)*1048576) w boxes lc rgb variable notitle. This is what I have now, this might be a possibility? The first example was an Excel graph. 回答1: Finaly i have for me the perfect, and . . i think a very nice solution. First the plot and after that the correspondenting script. The highlights are; maks = STATS_max_y min = STATS_max_x afgenomen = gebruikt-zon set palette

问题 I'm plotting a histogram in gnuplot and the bars end up covering the tics in the x axis, like so: Is there any way to prevent this? 回答1: I don't know for sure if this will work or not, but you can try this: set grid noxtics noytics noztics front From reading the documentation, it looks like that will push the tics to the top of the stack of objects when plotting (i.e. they'll get plotted after the bars making them visible (I think) ). Another option is to use transparency in your fillstyle,

问题 I was wondering if there is an easy way, using Gnuplot, to get the last point in a data file say data.txt and store the values in a variable. From this question, accessing the nth datapoint in a datafile using gnuplot I know that I can get the X-Value using stats and GP_VAL_DATA_X_MAX variable, but is there a simple trick to get the corresponding y-value? 回答1: If you want to use Gnuplot, you can plot 'data.txt' plot[GPVAL_DATA_X_MAX:] 'data.txt' show variable GPVAL_DATA_Y_MAX OR plot 'data

问题 I'm generating .eps figures in gnuplot for inclusion into papers typeset with LaTeX, using set terminal postscript eps enhanced "Helvetica" 14 This generally works perfectly, but i'm now trying to put together a figure using a label that includes a ± symbol. If I use it directly, e.g. set label "-56±2" then it appears correctly on the default 'wxt' terminal but is prefixed by an A with a circumflex (i.e. -56±2) in the postscript output. Using set label "-56^+/-2" works but looks rubbish. In

问题 I am looking for a gnuplot-like program for charting data in a timeline. gnuplot-like == Runs on Linux command line functionality (a GUI isn't going to help me much) scriptable syntax outputs to jpg, png, svg, or gif The output should be something like this: | | | | | set5|###################### | | | | | | | set4| ###### ####### | ########| | | | | | set3|############ |############# |## | | | | | set2| ######################### | | | | | | set1| ######### |### |########## | | | | | ----+----

问题 Candlestick plots on the financial sites, at least the ones I have seen, fill the candlestick green if the close is higher then the open, and red if the close is lower then the open. If I set the fill style all candlesticks are filled with the fill color, is there a way in gnuplot 4.6 to use the color scheme as I described above? A sample script is: set xdata time set timefmt"%Y-%m-%d %H:%M:%S" set xrange ["2014-01-01":"2014-01-02"] set yrange [*:*] set datafile separator "," plot '201401

问题 If I have a file of several data points. How can I plot a function of them? For example, suppose I have a file of to columns x and y and I want to plot sin(y) as a function of 1/x . 回答1: Try this: plot "-" u (1/$1):(sin($2)) w l 2.00000 0.16104 3.00000 0.15604 4.00000 0.40055 5.00000 0.09972 e Or when not using data files make use of the parametric mode, which is described here EDIT With this data file Data.csv : 0.00000 0.33371 1.00000 0.13034 2.00000 0.16104 3.00000 0.15604 4.00000 0.40055

问题 I am trying plot data sets consisting of 3 coordinates: X-coordinate, x-coordinate and the number of occurrences. example: 1 2 10 3 1 2 3 2 1 I would like to draw for every line a dot at x,y with a diameter which is depending on the third value. Is that possible with Gnuplot? 回答1: Create a 2D plot with variable point size. See the demo. Example: plot 'dataFile.dat' u 1:2:3 w points lt 1 pt 10 ps variable 来源： https://stackoverflow.com/questions/2689403/gnuplot-dot-plot-with-data-depending-dot

问题 I have a data file that looks like this : "curve 0" 0 0.7800 10 0.333 12 0.5136 24 0.2096 26 -0.066 40 -0.674 42 -1.123 "curve 1" 0 0.876 2 0.73 4 0.693 6 0.672 10 0.70 12 0.88 16 0.95 148 -0.75 "curve 2" 8 2.2305 10 2.144 12 2.13 76 1.26 78 0.39 98 -0.97 I would like to plot each block of data independently of the others using gnuplot. Here's the code I'm using for this purpose : plot 'file' i 0 u 1:2 w lines title columnheader(1),\ 'file' i 1 u 1:2 w lines title columnheader(1),\ 'file' i 2