Unable to parse FCS files within the workspace

[ppremraj-zs]

Hello,

I am trying to parse the fcs files within a flowjo workspace. I am getting the following error. Can you please guide me how to solve this

gs <- flowjo_to_gatingset(ws, name=1, isNcdf=FALSE)

Parsing 1 samples
windows version of flowJo workspace recognized.
version X
Creating flowSet...
loading data: /home/ppremraj/projects/cell-bio-flow-autogate/Specimen_002_D1_D01_030.fcs
Compensating
gating ...
Error in .cpp_gating(gs@pointer, mat, guid, gains, nodeInd, recompute, :
try to extend the coordinates for ellipse gate!
In addition: Warning message:
In .parse.pData(obj = obj, keywords = keywords, sg = sg, keywords.source = keywords.source, :
Can't find the FCS files for the following samples:

[gfinak]

The error indicates that the gating scheme in the workspace has an ellipse gate whose coordinates cross 0, and is likely truncated in the workspace. flowJo to gatingset tries to deal with this by extending the coordinates of gates truncated on the boundary by extending them in the negative direction in order capture all the cells they are intended to capture.
Except this doesn't work for ellipse gates and you get this error.
Your can disable this by setting the extend_val argument to flowjo_to_gatingset to a large negative value (try -1000). This is the threshold at which the method will try to extend gates on the boundary, effectively disabling the behavior.
But then you will have there issue with other rectangle gates that if they're truncated on the boundary they will not capture all the intended cells.
To be clear, this is an issue with flowJo export to XML.

[ppremraj-zs]

Thank you so much, after setting extend_val = -14000 it worked.

[mikejiang]

With latest patch from cytolib RGLab/cytolib@88b3887
changing extend_val shouldn't be needed for parsing ellipsoidGate properly.