# CSV time series filename format
**URL:** https://discourse.paraview.org/t/csv-time-series-filename-format/15250
**Category:** Feature Requests
**Created:** [August 19, 2024, 8:30am UTC](https://discourse.paraview.org/t/csv-time-series-filename-format/15250 "2024-08-19T08:30:46Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Roman](https://discourse.paraview.org/u/Roman)
#### Post date: [August 19, 2024, 8:30am UTC](https://discourse.paraview.org/t/csv-time-series-filename-format/15250/1 "2024-08-19T08:30:47Z")
This is a pretty minor issue, but perhaps easy to improve for that reason. According to [https://www.paraview.org/Wiki/ParaView/Data\_formats#CSV\_time\_series](https://www.paraview.org/Wiki/ParaView/Data_formats#CSV_time_series) (and I have verified that it is indeed so), to read CSV time series, the files **must** be named “someName.csv.[0-n]”, i.e., with the running index **after** the extension. This is a bit awkward - reading file series in other formats such as vtu, vtp etc. works with “someName[0-n].vtu”. For consistency, and to avoid messing with the file type identification of operating systems, which is based on filename extension, I think it would be nice to make this work with “someName[0-n].csv”.
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [August 19, 2024, 8:31am UTC](https://discourse.paraview.org/t/csv-time-series-filename-format/15250/2 "2024-08-19T08:31:16Z")
Definitely unexpected, are you sure the standard formating is not supported ?
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### Author:  [@Roman](https://discourse.paraview.org/u/Roman)
#### Post date: [August 19, 2024, 8:48am UTC](https://discourse.paraview.org/t/csv-time-series-filename-format/15250/3 "2024-08-19T08:48:16Z")
Yes, I have verified that “someName[0-n].csv” doesn’t work. It only reads the first file in the series.