These are chat archives for openseadragon/openseadragon

30th
Jan 2018
Prayag
@prayagk
Jan 30 2018 11:33
can anybody tell me about what the levels in tileSources mean??
Grant Echols
@gechols
Jan 30 2018 15:30
I'm trying to convert pixel coordinates from the original image into coordinates I can use to create an overlay in the viewer. I'm confused at what set of coordinate conversions I should be using. Currently I use the tiledImage.imageToViewportRectangle(1182, 285,1464-1182,369-285). The resulting rectangle is {x: 0, y: 116.61752066115702, width: 47.7302479338843, height: 14.217520661157023, degrees: 0}. The X coordinate seems way off and the overlay ends up being way too small. What is the recommended way of converting image coordinates to overlay coordinates?
Grant Echols
@gechols
Jan 30 2018 15:42
My end goal is to call viewer.addOverlay
Grant Echols
@gechols
Jan 30 2018 16:38
Hm...belay that question - I didn't realize my input was still in string form. Erk!
Ian Gilman
@iangilman
Jan 30 2018 18:07
:)