[actually not an issue] How to write grayscale image without using WriteScanLine function?

[KaiWangCanada]

WriteScanLine works fine. It's just kind of slow, looping through all the rows. For image with over 1000 rows this can be bottleneck.

Is there a better way to write grayscale image? E.g. write whole array of image pixel values directly? Thanks!

[electro-logic]

Use WriteRawStrip