getBoundingBox latitude off?

[bsuwal]

I was computing the midpoint of my image from the getBoundingBox() and noticed the latitude was always a bit north of my actual image. This may be only specific to my images, but it seems that this is what caused it:

the getOrigin() function gets me the top left (north-west) coordinate of the image. The line
var y2 = y1 + resolution[1] * this.getHeight();
would then always be north of the already north-most coordinate. This is what worked for me: changing the + sign in that code snippet to a negative sign
var y2 = y1 - resolution[1] * this.getHeight();
This is would mean that y2 is now the southern border of the image. This code is from the getBoundingBox() function

[matthesrieke]

I second this. I am using GeoTIFFs of geostationary satellites, and I had to adjust the bounding box with the origin myself in order to display it correctly with openlayers.

Here is what I did, its a workaround and imho needs a fix in the getBoundingBox() function.

const gt = geotiff.parse(...);

// for debugging, just use the first
const i = gt.getImage(0);
const origin = i.getOrigin();
const bbox =  i.getBoundingBox();

// manually fix miny and maxy
const targetBbox = [bbox[0], bbox[1] - origin[1] * 2, bbox[2], bbox[3] - origin[1] * 2];

[constantinius]

Hi @matthesrieke and @bsuwal!

Thank you for submitting this issue!
Could you please provide an example image where this happens?