I find matplotlib's ability to accept a string cmap to be extremely convenient during plotting, i.e. plt.imshow(data, cmap='red'). It would be fantastic to enable the same functionality with pyqtgraph's pg.colormap, i.e. item.setImage(data, lut='viridis') or lut=pg.colormap.get('viridis').

The current workaround is lut=pg.colormap.get('viridis').getLookupTable(nPts=X). The trick with a str lut is how to determine X (i.e. during autolevels, should nPts always be set to image range?), what should happen if the image has negative values, and probably a host of options I'm not even considering. But it would be quite convenient 🙂