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 Apr30 awarded Popular Question Apr4 accepted Count elements of a list Apr4 comment Count elements of a list What about the criteria of the other three sectors? Apr4 asked Count elements of a list Mar25 comment Delete the white areas in GraphicsGrid It works fine! But what about when we have 3x3 gird {{img, img}, {img, img},{img, img}}? The Golden Ratio deletes all the vertical white area but a lot of horizontal white areas appear. Mar25 accepted Delete the white areas in GraphicsGrid Mar25 asked Delete the white areas in GraphicsGrid Feb21 comment ListPlot and AspectRatio OK! I consider this question answered. Feb21 comment ListPlot and AspectRatio I'm confused now! How do you edit PlotRange with the condition you mentioned? Feb21 comment ListPlot and AspectRatio So I have to change the plot range perhaps PlotRange -> 2? Feb21 comment ListPlot and AspectRatio Let me make it more clear. The red and blue lines correspond to 0.1 in both axes. I want to remain 0.1 keep the PlotRange -> {{-1.5, 2}, {-1, 1}} and the square plot. Is this possible? Feb21 comment ListPlot and AspectRatio The ranges should be fixed as PlotRange -> {{-1.5, 2}, {-1, 1}} Feb21 comment ListPlot and AspectRatio I want a square plot like that posted in which the distance between the tickmarks of the x-axis (blue line) to be equal in length with the distance between the tickmarks of the y-axis (red line). Feb21 comment ListPlot and AspectRatio Yes, I want the blue and red distances shown in the plot to be equal. Feb21 comment ListPlot and AspectRatio OK, but what if I also want a square frame? Feb21 asked ListPlot and AspectRatio Feb16 accepted Compute the evolution of several quanties from a data file Feb16 comment Compute the evolution of several quanties from a data file Now everything works OK however, the code needs about 3 min to calculate the values. I assume that there must be a faster solution. Just a minor comment for point (b). How can I create a table containing for every energy level the corresponding percentage, so I can use directly ListPlot? Feb16 comment Compute the evolution of several quanties from a data file lyes does not take into account the criterion t < 23 and as I explained Range[-3,1] does not work in the real data file. Feb16 comment Compute the evolution of several quanties from a data file (n/not)*100 is the correct. n is the number of items with sixth column equal to 1 or 2 with third column less then 23, while not is the total amount of items for a given energy level.