GraphPad Prism is the statistics and graphing program most biology and medical labs use, and a .pzfx file is a Prism project saved as XML: its data tables, the info sheet, and its analyses and graphs. Prism is a paid subscription for Windows and Mac. A collaborator, a reviewer, a student whose licence has lapsed or anyone sent the project for its numbers cannot open it without installing Prism.
This page reads the data tables out of the project and lays each one out as Prism does - row titles, the X column, and every data set with its replicates, or its mean with SD, SEM, %CV and N - and saves them as CSV files that Excel, R, Python or any statistics package opens. It is free to use, with no account and no upload limit, and it runs entirely in your browser: nothing is uploaded, and once you have used it, it keeps working offline.
Prism keeps the analyses, graphs and layouts in a compressed binary part of the file that only Prism can read, so they are not shown; the data they come from is.
- Can I open a .prism file here?
- No. Prism 10 and later save .prism files by default, a compressed package that only Prism reads, and .pzf files are binary too. Only the XML format, .pzfx, can be read without Prism. Whoever has Prism can save a .pzfx copy with File, then Save As.
- How do I open Prism data in R or Python?
- Save the tables as CSV here and read them with read.csv in R or pandas.read_csv in Python. Each column heading names the data set and the subcolumn, so replicates and error values stay identifiable. In R, the pzfx package also reads .pzfx files directly.
- What happens to decimal commas?
- Prism saves numbers as typed, so a project from a country that writes 3,5 for three and a half holds commas. By default the CSV turns them into points, which every program reads as numbers; untick the option to keep them as they are.
- Is my research data uploaded?
- No. The .pzfx file is read by this browser tab on your own device, and the CSV files are made here; nothing is sent anywhere.