Datafile: heatmaps.txt

Using Gnuplot, create heatmaps using:

• “with image”
• “pm3d/dgrid3d” and “splot”

Create heatmap WITHOUT interpolation;

• As default, pm3d uses a color map which varies from black to yellow via blue and red. Change the pallete!
• Double the number of visible points.
• Question: Have Gnuplot choose the correct number of interpolation points by itself.