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how to make similar polar plot to Creating a Polar Grid with Tikz -just using tikzp. (no pgfplots, pstricks etc)- with negative axis value, there all example just start with axis 0.

So basically I want plot data from csv file with negative value level just using the tikz package.

similar question is Negative y value in polar plot, with no package restriction

thanks.

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  • Here's a solution that uses PGFPlots: Negative y value in polar plot – Jake Jun 18 '15 at 13:07
  • Hi jake, thank you for your prompt reply. However, would be possible to get the same thing without using the pgfplots package? – mark Jun 18 '15 at 14:06
  • Yes, see the answer to this question: Creating a Polar Grid with Tikz – Alenanno Jun 18 '15 at 14:51
  • @Alenanno, Hi, do you refer to mr Paul Gessler on datavisualization comments? BTW, I haven't found any answer to my question there. – mark Jun 18 '15 at 15:21
  • Doing this without pgfplots isn't really wise or helpful. pgfplots is implemented with TikZ; I don't see the disadvantage in using it. – Sean Allred Jun 18 '15 at 16:23
  • Ok, thanks for the comments. So How can i get something similar to this http://ham.stackexchange.com/questions/267/how-to-find-the-front-to-back-ratio-given-an-antenna-radiation-pattern-diagram in latex – mark Jun 18 '15 at 18:13
  • If you want your axis to start from -10 for example, you can add 10 to all your values (in a foreach loop you can use evaluate for this), draw them and on the axis add the ticks -10,-9, ... in place of 0,1, ... – Kpym Jun 20 '15 at 14:09
  • @Kpym, thank you for you answer. so now I m facing the following issue .. how to plot polar data file inside the tikzpicture using the following statement, but I got a Cartesian instead of polar one, \draw[color=blue, domain=0:360, line width=1.5pt] plot[smooth] file {data.dat}; % data.dat { 0 8.381467 45 9.090974 90 9.877479 135 10.68895 180 11.49293 225 12.27133 270 13.0153 325 13.72148 360 8.381467} – mark Jun 22 '15 at 09:06
  • @mark sorry I don't understand your question, but if it is not anymore about polar plot with negative function values, please post another question. – Kpym Jun 22 '15 at 12:09

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