Hello Rashad, I can not instanciate any working GenericMapProjection from a Wkt: a >> default projection is always used instead. >> > > Default how? >
In fact, it's not default. But I don't really understand the behavior, because there is some properties I can not set (i.e. parameter value, EPSG number,...). > >> Indeed when I get back the Wkt of the instanciated GenericMapProjection, >> It is completely different than the one I have specified. >> > > OSSIM is in charge when you instanciate and get back a projection in WKT. > > > >> Here is the code (as simple as can be) I use to test this >> <http://pastebin.com/iBt5dnrV>. Can someone be kind enough to check if >> this works on his OTB version and/or explain me the reasons why I can not >> use this projection in OTB? >> > > I tried your wkt string and this is what I got: > > PROJCS["unnamed",GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS > 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9108"]],AUTHORITY["EPSG","4326"]],PROJECTION["Sinusoidal"],PARAMETER["longitude_of_center",0],PARAMETER["false_easting",0],PARAMETER["false_northing",0]] > I got the exact same wkt string. > > > AFAICT, for OSSIM if there is no datum or it is unknown in case of GEOS > projection, ossim sets it to WGS84. and add bunch of related stuff. > > .... > AUTHORITY["EPSG","7030"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6326"] > .... > > Ok. I am a little confused here, about what is the job done by GDAL(GEOS?) and the one of OSSIM. Here is <https://groups.google.com/forum/?fromgroups#!searchin/otb-users/ossim$20projection/otb-users/iJJmsemq0Mk/NbkujPtxbvgJ>an interesting topic about this. But it's 5 years old, so maybe the framework has a bit evolved since. Is there any support of PROJ4? Anyway, we should be able to handle such custom projection, isn't it? > Honestly, I don't know much about this. But I hope someone else in list > might be able to help. > Thank you anyway. I hope some other otb big guys will come here ! > > >> Thank you in advance, >> Rémi >> >> >> >> >> PS: I also try to modify the Wkt in the example given in the cookbook >> <http://www.orfeo-toolbox.org/SoftwareGuide/SoftwareGuidech11.html#x36-19800011.2> >> but it did not worked too. The parameter I try to modify in the Wkt were >> the spheroid flattening parameter. >> >> -- >> -- >> Check the OTB FAQ at >> http://www.orfeo-toolbox.org/FAQ.html >> >> You received this message because you are subscribed to the Google >> Groups "otb-users" group. >> To post to this group, send email to [email protected] >> To unsubscribe from this group, send email to >> [email protected] >> For more options, visit this group at >> http://groups.google.com/group/otb-users?hl=en >> --- >> You received this message because you are subscribed to the Google Groups >> "otb-users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/d/optout. >> > > > > -- > Regards, > Rashad > > -- > -- > Check the OTB FAQ at > http://www.orfeo-toolbox.org/FAQ.html > > You received this message because you are subscribed to the Google > Groups "otb-users" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/otb-users?hl=en > --- > You received this message because you are subscribed to a topic in the > Google Groups "otb-users" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/otb-users/RuCoBV0ZWl8/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- -- Check the OTB FAQ at http://www.orfeo-toolbox.org/FAQ.html You received this message because you are subscribed to the Google Groups "otb-users" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/otb-users?hl=en --- You received this message because you are subscribed to the Google Groups "otb-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
