# Report a bug about import the fcsv file

**URL:** <https://discourse.slicer.org/t/report-a-bug-about-import-the-fcsv-file/28958>\
**Category:** Support\
**Tags:** file-import\
**Created:** [April 17, 2023, 11:46am UTC](https://discourse.slicer.org/t/report-a-bug-about-import-the-fcsv-file/28958 "2023-04-17T11:46:32Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Chuan](https://avatars.discourse-cdn.com/v4/letter/c/4da419/32.png) [@Chuan](https://discourse.slicer.org/u/Chuan)\
**Post date:** [April 17, 2023, 11:46am UTC](https://discourse.slicer.org/t/report-a-bug-about-import-the-fcsv-file/28958/1 "2023-04-17T11:46:32Z")

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Hi,

I would like to report a bug when I load the fcsv files.  
I export landmarks as fcsv files, but when I want to load them in a new slicer windows. I found the value was changed to the opposite value automatically.  
For example, these are first two landmarks in the fcsv file.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/5/6/562f51eb86b30b6ac52d10a6c68d457d0d3db9d1.png)  
You can see the x value are 2.989 and 3.341.  
But when I loaded in slicer, the value was changed to the reverse value -2.989 and -3.341  
 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/7/7/77f08bc93a6de15e9246380b7ccfddb3dc078fed.png)

Does anyone meet the similar bug before? Until now I have not solved this problem.

Best regards,  
Chuan

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**Author:** ![jamesobutler](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jamesobutler/32/7511_2.png) [@jamesobutler](https://discourse.slicer.org/u/jamesobutler)\
**Post date:** [April 17, 2023, 12:04pm UTC](https://discourse.slicer.org/t/report-a-bug-about-import-the-fcsv-file/28958/2 "2023-04-17T12:04:34Z")

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Your file is saved in the LPS coordinate system. As shown in Slicer, it is RAS coordinates. Have a read about the coordinate systems:

[https://www.slicer.org/wiki/Coordinate\_systems](https://www.slicer.org/wiki/Coordinate_systems)