Hello Jovan, Did you try this? my $z = sequence(10,10)*rand(1);
Seems to me you just need a z-value pdl that has the same dimensions as the x and y coordinates. David On Thu, Apr 18, 2024, 1:11 PM Jovan Trujillo <jovan.trujil...@gmail.com> wrote: > Hi Greg, > Yes, I've been looking into a heat map or flattened 3d scatterplot. In > Mathematica, I can easily import the Excel spreadsheet and plot using > ListDensityPlot to give me a nice high-resolution image of the data. > > But my question is simply a mapping problem. If I have two piddles with $x > and $y coordinates and a third representing the $data, how do I create a > $matrix that maps the $data based on the coordinates from $x and $y? If I > had $matrix I can simply plot image($matrix) with PDL::Graphics::Gnuplot. > > Thank you, > Jovan > > On Thu, Apr 18, 2024 at 1:16 AM Grégory Vanuxem <g.vanu...@gmail.com> > wrote: > >> Hello, >> >> I haven’t carefully looked at your problem with GNUPlot but I wonder if >> what you are trying to achieve could not be done with surface routines, >> that’s with 3d ones ? Or maybe something like heatmap like this question: >> >> >> https://stackoverflow.com/questions/76577557/trying-to-create-heat-map-using-ggplot-similar-to-density-contour-plot-but-wh >> >> Just to give some hints on possible routines. >> >> - Greg >> >> Le jeu. 18 avr. 2024 à 01:53, Jovan Trujillo <jovan.trujil...@gmail.com> >> a écrit : >> >>> Hi all, >>> >>> I've been wracking my brain all morning trying to figure this out, but >>> how could I convert a set of 3 1D piddles containing xyz data into a matrix >>> for plotting as an image using PDL::Graphics::Gnuplot? Say for example: >>> >>> use PDL; >>> use PDL::Graphics::Gnuplot qw/image gplot/; >>> >>> my $x = flat(xvals(10,10)); # This is basically how x-coordinates are >>> output from my machine. >>> my $y = flat(yvals(10,10)); # Same format as x-coordinates >>> my $z = sequence(100)*rand(1); # Some dummy data for this example. >>> >>> my $image; # How do I map $x,$y,$z into this 10x10 $image piddle? >>> image($image); >>> >>> That's my basic problem. How do I map $x,$y,$z data into an $image >>> matrix? >>> >>> Thank you, >>> Jovan >>> _______________________________________________ >>> pdl-general mailing list >>> pdl-general@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/pdl-general >>> >> _______________________________________________ > pdl-general mailing list > pdl-general@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/pdl-general >
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