Reports

LOL... After a LOT of searching I learned that you cannot run imageToViewerCoordindates() until the DZI image has been opened!

The solution is to wait until the viewer has opened.

  viewer.addHandler('open', function(target) {
    var point = viewer.viewport.imageToViewportCoordinates(92060,40504);
    console.log("point ", point);
    var img = document.createElement("img");
    img.src = "balls/orange.gif";
    viewer.addOverlay(img, point);
  })

Now how can I offset the overlay image so it isn't the top-left corner, but the middle, or somewhere else in the image. This is variable, depending on zoom level!

Or is there a better way of doing markers?

Reasons:

Blacklisted phrase (0.5): how can I
Whitelisted phrase (-1): solution is
Long answer (-0.5):
Has code block (-0.5):
Ends in question mark (2):
Self-answer (0.5):
Looks like a comment (1):
High reputation (-1):

Posted by: anthony

79426196