Initial zoom level with Seadragon export

StackOverflow https://stackoverflow.com/questions/21156471

  •  28-09-2022
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Question

Lately I've encountered and issue. When I export my graphs from Gephi with a Seadragon plugin, First zoom level is far way back, e.i. on first zoom levels it's not even visible, on 5th zoom level whole graph take something like 10 pixels in diameter. PNGs are being exported in a proper way. Yesterday Seadragon export was working fine. Any ideas how to fix that?

So for example for tile size 200px this is the only file in map_files/8 (called 0_0.png) enter image description here

The image is 156 x 156. So you can barely see image at zoom level 8 (first zoom level is 0).

Was it helpful?

Solution

The Seadragon (Deep Zoom) format specifies that the pyramid should go all the way down to 1 pixel at zoom level 0. Level 1 should be 2 pixels wide, level 2 should be 4, etc. Sounds like it was working correctly.

Of course when you display the image, you need to pick the level that works for your current display size, rather than starting at the tip of the pyramid.

OTHER TIPS

What helped me is removing Gephi (with conf files) and reinstalling it.

Sadly I still don't know what was the problem

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