Mike. Just a blind shot:
Take a look at the ECW file in the maptitude directory. <NUTM01> is the only projection that has there has a deifinition for the a parameter (eliipsoid main axis ). All other <NUTMxx> definitions lack a value for a. Try adding a=6378206.4 to the NUTM19 and see if the "Major Axis or Radius = ..." message goes away and if you have any furthr improvement when viewing the images. Good luck Armando mekesse wrote: >We have a customer who has purchased an extensive library of aerial >imagery that is in ECW format. According to the Maptitude help >system, ECW format is supported. There is mention of an >associated .ERS file that contains the header information. > >These aerial photos do not have .ERS files. rather, the header >information is built into the file. I confirmed this using a free >utility from ER Mapper. > >Ok, here is the problem. > >I can open the aerial photo in Maptitude and can successfully add new >layers to the map. However, if i try to add an aerial photo to an >existing map (the most common use case), the aerial photo will not >appear. It shows up in the layer list, but does not display on the >map. I have tried turning off every layer except the photo and it >doesn't show up. > >The only way i have been able to get this to work was by doing the >following: > >1. Opening the image in the ER Mapper header editor to determine the >projection (or using the GISDK to query the projection). For the >images i was testing, the projection was listed as "NUTM19." I >assumed that this meant "Universal Transverse Mercator" in "Zone 19." > >2. I explicitly set the projection for the map to be "UTM 19" and >then attempted to add the aerial image. This worked successfully. > >The problem i am having is that this customer is concerned that the >workflow is too cumbersome (i.e. having to open the image in another >program to determine the projection first and then having to set that >projection for the map). They are recent MapInfo converts, which >handled these image formats natively. > >According to the documentation, Maptitude is supposed to >automatically lock the projection of the map to be the same as the >projection for the image that has been added. This would be fine. I >have confirmed that this works properly with other imagery formats >(i.e. TIFF and Mr.Sid). However, ECW seems not to work. > >Is there something that can be done here? I was thinking that the >header file may be listing the projection using a code that Maptitude >doesn't understand. I would be willing to help the customer update >the headers, if this will work. However, i need to know what to >update it to. > >Another nugget of information: Whenever i add an ECW file to the >map, i receive the following error message: > >"Major Axis or Radius = 0 not given. Click OK to continue. >Reference Info, lay_map,1070,0." > >Any help would be greatly appreciated! > >Thanks. > >Michael > > > > > > > >Yahoo! Groups Links > > > > > > > > > > > > ------------------------ Yahoo! Groups Sponsor --------------------~--> Has someone you know been affected by illness or disease? Network for Good is THE place to support health awareness efforts! http://us.click.yahoo.com/RzSHvD/UOnJAA/79vVAA/C5grlB/TM --------------------------------------------------------------------~-> Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Maptitude/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
