Plotting a filled contour and saving as eps or svg

Just to be clear, I meant flawless in showing the data, not the fonts. (I personally do not really care that much about the fonts as long as I can have a LaTeX one.) What I mean by flawless is that I want my filled contour plot to:

  • match the colorbar exactly
  • be vectorized (not a rasterized image),
  • with the contour fillings inside of polygons that are at least as fine as the data
  • not show artefact lines appearing between fillings or inside polygons (A major issue with MATLAB’s plotting since version 2014b I think)