any way to reduce the gds file size about gdspy

[tvt173]

for a gds that already exists, you can zip it (many programs can open compressed gds files as-is) or convert to oasis format (klayout can do this for you). if you're making a gds from scratch, try making better use of hierarchy. that's typically the best way to keep gds file size down, when possible

[jamesvitali]

thanks for your suggestion, so if from scratch, that means I need to find the smallest unit that has the same pattern to construct the gds, is that correct

[tvt173]

yes, exactly... build Cells and construct them hierarchically with CellReferences

[jamesvitali]

thanks @tvt173 any tool or method you know can help to get the similar pattern if I have a large array?

[tvt173]

yeah, use a CellArray

[jamesvitali]

let's say that i have a big array and I don't know what pattern it has. But need to reduce the file size. Per our discussion, I need to find the similar pattern out and construct them hierarchically with CellReferences. but any tool or method I can use to find the pattern from the array?