I need to draw excellent graphs/charts from my data. Please I need assistance with free software for R/Statistical or any other excellent ones that I can use. I want my paper to be accepted in reputable journals.
If you are done with your manuscript and have spare time for a good learning curve, I would suggest you going for R. There are incredible capabilities in it, especially the package ggplot2.
However, if you are not yet done with your manuscript or time is scarce, you may follow Nurul advice. Similarly to PRISM, there are other open-source projects like QtiPlot (http://www.qtiplot.com/) and Veusz (https://veusz.github.io/).