ISEA inverse transformation

[am2222]

Hi,
Does ISEA supports inverse transformation? e.g. from ISEA Sequence number to lat/long?
For example something like this?
echo 2358806 | cs2cs +proj=isea +aperture=3 +resolution=12 +orientation=``isea`` +mode=``di`` +to +proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs -f "%.6f"

[kbevers]

No. Updated docs to be more clear about that in 9750c04

[am2222]

@kbevers sorry about commenting on a closed issue. Is there any sources to implement its reverse transformation based on that?

[kbevers]

Is there any sources to implement its reverse transformation based on that?

Your best bet is probably to consult the original paper on the projection. My previous update to the docs included the wrong reference to the paper. That is now fixed and the website docs will be updated shortly https://proj.org/operations/projections/isea.html

[am2222]

@kbevers Actually I found that paper, seems it is quite straight forward for to inverse from snyder's projection to lat/long) but I am wondering about converting seqnum or q2di to snyder's projection, I could not find anything about that part

p.s: I guess I can not access to the new paper. My university does not cover access to it

[ppKrauss]

Hi @kbevers, can you check this question? https://gis.stackexchange.com/q/418623/7505

... I don't understand how to use ISEA. I am expecting a good area calculations with it, but it does not work well.

[ppKrauss]

Actually I found that paper

Hi @am2222, can you show here the link or bibliographic record of the paper?