Gnuplot: line 0: no previous plot Question: I am trying to save the Gnuplot plot in PNG that I get with my SDR and a tool named rtl_power_fftw. This command displays my plot on the screen but I want to save it in PNG: rtl_power_fftw -f 900M:950M -n 10 -b 512 -q | sed -u …
gnuplot data file with open or close parenthesis / parentheses "(" or ")" : "Skipping" warning / "x range is invalid" Question: I would like to read output from a python script that has parentheses and also commas (see below) directly into gnuplot. The error message is given below. Although it works, I would like …
How to plot [number of items, price sold] as histogram graph in gnuplot Question: I have a csv file that prices of items and the number of items for that price. For example a .csv file: 32,4.23 980,44.53 533,4.23 The above csv is interpreted like this: 32 items are available for $4.23 and 980 items …
How do I plot list of tuples in Python? Question: I have the following data set. I would like to use Python or Gnuplot to plot the data. The tuples are of the form (x, y). The Y-axis should be a log axis, that is, log(y). A scatter plot or line plot would be ideal. …
Calling gnuplot from python Question: I’ve a python script that after some computing will generate two data files formatted as gnuplot input. How do I ‘call’ gnuplot from python ? I want to send the following python string as input to gnuplot: “plot ‘%s’ with lines, ‘%s’ with points;” % (eout,nout) where ‘eout‘ and ‘nout‘ …
gnuplot vs Matplotlib Question: I’ve started on a project graphing Tomcat logs using gnuplot-py, specifically correlating particular requests with memory allocation and garbage collection. What is the collective wisdom on gnuplot-py vs Matplotlib for Python graphing. Are there better graphing libraries out there I haven’t heard of? My general considerations are: While gnuplot has large …
