Plot a csv file with gnuplot

It only takes a minute to sign up. Connect and share knowledge within a single location that is structured and easy to search. I am trying to have a user that has a csv file have the ability to plot columns of his choice using gnuplot.

This is what I have so far:. I am currently running this script and it gets to the point where it opens gnuplot but it does not enter the variables that the user entered. Is this the best approach to opening gnuplot and having the user inputs be plotted? The data that will be analyzed will have a lot of data columns and that's why I only want to choose a couple at a time. Also, if you want your plots to persist on the screen using the default gnuplot terminal type then you likely want to add the -p persistent option.

Your script should also have an appropriate shebang at the top i. Ubuntu Community Ask! Opinions may have changed.

Recently I had to do some testing which resulted in a lot of log data. Looking at a bunch of text is not the same as seeing things graphically, this particular logdata was perfect to put in a graph. My goto favorite tool for graphs and charts is gnuplot. Not only is it very extensible, it is also reproducable. Give me a configfile and command over "do this, then this and then such and such" in Excel to get a consistent result.

In this article I'll give tips for using gnuplot, which include:. I've got an article published here where you can read howto make a bar-chart histogram with gnuplot. The data in this article is masked, but that doesn't matter for the gnuplot results. Consider sponsoring me on Github. It means the world to me if you show your appreciation and you'll help pay the server costs.

I'm using gnuplot 5. You can find my example CSV data at the bottom of this article. Save it as plot. The article will go over the different topics step by step. The data is from another piece of software I've written and contains extra information, but that is prefixed with a hash. Not valid CSV, but we'll use that inside gnuplot to append some data to the title of the graph. Let's start with the basic setup and command. Create a file named example.

The first line tells gnuplot to use a comma instead of whitespace to seperate the data thus parsing the csv. Okay, not much of what we want here. However, even though I set datafile separator "," in gnuplot, gnuplot cannot read my data even if I set the x range and y range. Is there more I need to enter at the command line in order for it to plot my data? Here is a small part of what I want gnuplot to plot: , It should work.

It is optional. Third line tells gnuplot to plot the graph stored in data file named book1. Code provided above plots only a simple graph. You can set title, xlabel, ylabel, legends etc. Watch Video. But what about if you have data in a file of. Let's discuss.

Among three lines, second line code is optional. Watch Video watch full information of creating. For more updates visit the home page. Post a Comment. These posts may also be useful for you top 3 websites for downloading research papers for free - April 27, This post provides you valid links of top 3 websites from where you can download research papers published on high ranked journals for free.

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