Error converting Giotto to Seurat object

[jennie-ui]

Describe the Error

Hello, I'm trying to convert a Giotto object into a Seurat object to calculate module scores. However, I've encountered errors when trying different input parameters. Has anyone encountered a similar issue beforet? Your help would be greatly appreciated. Thank you!

Error Message

Below is the code I used, along with the corresponding error messages:

> xenium_seurat <- giottoToSeurat(xenium_gobj)
Error in if (nrow(avail_sn) > 0) { : argument is of length zero
> xenium_seurat <- giottoToSeurat(xenium_gobj, spat_unit = 'rna')
Error in if (nrow(raw_exist) > 0) { : argument is of length zero
> xenium_seurat <- giottoToSeurat(xenium_gobj, spat_unit = 'cell')
Error in if (nrow(avail_sn) > 0) { : argument is of length zero

Giotto object information

Here is my Giotto object, which contains Xenium data:

> xenium_gobj
An object of class giotto 
>Active spat_unit:  cell 
>Active feat_type:  rna 
[SUBCELLULAR INFO]
polygons      : cell nucleus 
features      : rna blank_code neg_code neg_probe 
[AGGREGATE INFO]
expression -----------------------
  [cell][rna] raw normalized scaled
spatial locations ----------------
  [cell] raw
  [nucleus] raw
dim reduction --------------------
  [cell][rna] pca harmony umap
nearest neighbor networks --------
  [cell][rna] sNN.umap

Feel free to reach out if you have any ideas on how to resolve this issue!

[tsoruu]

A Giotto Suite user here, not a Giotto Suite developer. Found the same bug when converting a Giotto Single Cell object to Seurat. Same Error too. I'll look up the function code in my free time. For now, I'm following the Seurat Single Cell Tutorial and modifying some parameters to suit my needs.