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use the following command, for example, plot "foo" u 1:2 smooth bezier the other options instead of bezier are sbezier, csplines, acsplines. I would just test them for my data and see which one works the best for my purpose.


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Basically, you plot surfaces with the splot command. data_file contains your example data points. gnuplot> splot 'data_file' As you want a smooth surface, you have to specify that you want gnuplot to interpolate the data. Here is an example, see http://www.gnuplot.info/demo/dgrid3d.html for some others. gnuplot> set hidden3d gnuplot> set ...


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Try with set size square This should set the dimension (not scale) of the two axis to be equal.


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This sets the unit length of both axes to the same value: set size ratio -1 Here is an excerpt from the documentation: set size ratio <r> ... The meaning of a negative value for <r> is different. If <r>=-1, gnuplot tries to set the scales so that the unit has the same length on both the x and y axes. This is equivalent ...


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Not sure if this response will be of relevance anymore but since I wasn't able to find the answer elsewhere I thought I should share this with anyone else who may be stumbling across this page: You can use the data style "steps" to achieve what you would like. The step style maintains your data value until the next sample. You will have two ways of ...



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