--- In [email protected], mekesse <[EMAIL PROTECTED]> wrote:
> Armando, you saved the day! Also, kudos to Caliper for setting up > this user group! I am, now, a true believer! Mike, the forum was set up by Marjorie Rosswell some four years ago. Caliper staff are active partipants in this forum, and they provide valuable support to the community. But credit for founding this discussion group goes to Marjorie. Cheers Armando >Armando, > >Thanks Again for the very helpful hint! I determined that if i edit >the ECW in the Maptitude directory and add the following parameters >to the NUTM projections, the images are handled properly: > >a=6378137 ellps=GRS80 > >Philip, can you confirm that this is the major axis and ellipsoid i >should be using for all of the NUTM zones? If so, i think i am in >good shape. > >Armando, you saved the day! Also, kudos to Caliper for setting up >this user group! I am, now, a true believer! > >Michael > > >--- In [email protected], Armando Scalise <[EMAIL PROTECTED]> >wrote: > > >>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 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/
