A python script for analysing compression dilatometer data, allowing the user to plot the stress-strain data and for generating 'processing maps' of a material. The script was used to analyse data recorded in uniaxial compression for a Zr-2.5Nb alloy deformed at temperatures of 650C, 675C, 700C, 725C, 750C, 775C, 800C, 825C and 850C, at strain rates of 10-2.5, 10-2, 10-1.5, 10-1, 10-0.5 and 1 s-1, to 50% height reduction, using TA Instruments DIL 805 A/D/T Quenching and Deformation Dilatometer. The data for this experiment can be downloaded from; Daniel, Christopher Stuart, Peyton, Christian J., & Quinta da Fonseca, João. (2019). High Temperature Compression Studies of a Zr-2.5Nb Alloy using Deformation Dilatometer [Data set]. Zenodo. 10.5281/zenodo.3374512 A critical assessment of the application of 'processing maps' is included in the accompanying paper; C. S. Daniel, P. Jedrasiak, C. J. Peyton, J. Quinta da Fonseca, H. R. Shercliff, L. Bradley, and P. D.Honniball, “Quantifying Processing Map Uncertainties by Modeling the Hot-Compression Behavior of a Zr-2.5Nb Alloy,” in Zirconium in the Nuclear Industry: 19th International Symposium, ed. A. T. Motta and S. K. Yagnik (West Conshohocken, PA: ASTM International, 2021), 93–122. 10.1520/STP162220190031