GDS handling in nazca

[weiming]

Dear Nazca team,

I have a question about gds handling in nazca. I want to load a gds, read out all top cells and write to another gds. So far I am using a statement similar to

bb_lib = nd.gds_import.GDSII_stream(filename=some file, layermap=some layers)
#get the top cells from gds
cellList = bb_lib.topcell()

# write a specific cell out
bb_lib.GDSII_write_cellcellname = cellList[1]

I do get the error

    …self.GDSII_write_cell_and_under(f, cellname)

     AttributeError: ‘GDSII_stream’ object has no attribute ‘GDSII_write_cell_and_under’

It seems to me that the function GDSII_write_cell_and_under is missing. Is there a better way for me to do the task?

Version: 0.4.3.post2

Thanks!

[Xaveer]

Dear Weiming,

You could use the following:

import nazca as nd

cells = nd.load_gds('input_abc.gds', asdict=True)

# Assume this file has top cells 'a', 'b' and 'c'.

# Only export 'a' and 'b'.
export_cells = [cells['a'], cells['b']]

nd.export_gds(export_cells, filename='export_ab.gds')

Please note that the name of the exported cell can be different when it was already in use when importing the gds file. The actual cell name is in e.g. cells['a'].cell_name

Xaveer

[weiming]

Hi Xaveer,

thanks! That works perfectly.

Regards,

Weiming

[Author]

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