Re: [Shapedotnet-development] GeoTIFF support?
Status: Beta
Brought to you by:
k5jvc
Menu
▾
▴
Re: [Shapedotnet-development] GeoTIFF support?
|
From: John C. <k5...@ne...> - 2004-03-08 16:47:16
|
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="Content-Type" content="text/html;charset=ISO-8859-1"> <title></title> </head> <body text="#000000" bgcolor="#ffffff"> I looked at the GeoTIFF specs about a year ago and they seem pretty straight forward. What needs to be done before we start adding bitmap support is add support for datum/projection conversions. Displaying the bitmaps are pretty easy, placing them properly within the context of the larger map and with the proper geometric "adjustments" (skew, rotation) is the difficult part. I want to get the conversion methods into the next development version, but I'm not sure if with everything else that's on the to-do list for the next version if it'll be reasonable to add in bitmaps yet. I think I'm going to have to play that one by ear for now.<br> <br> The conversion code will need to be added before any more vector formats are added as well. All other (documented) vector formats that I'm aware of carry their datum/projection information with them. The shape format doesn't carry any information about it's datum/projection (in the official whitepaper) so it's pretty easy to just display the file and not worry about all that because the user *should* already be aware of it. I'm not sure if there is any reliable documentation on the format of the .prj file that some ESRI packages create, if you know of any, please let me know.<br> <br> John<br> <br> Rife, Ryan wrote:<br> <blockquote type="cite" cite="mid...@or..."> <meta http-equiv="Context-Type" content="text/html; charset=us-ascii"> <div> <p> <span>Any plans to add GeoTIFF support into SDN? I noticed that there is some code floating around that references imaging support, but nothing functional is in SDN yet. I created a simple demo to render a bmp image w/ additional geo location information (gis info was stored in a txt file) in SDN but nothing really useful….GeoTIFF is what is really needed. Later. </span> </p> <p> <span> </span> </p> <p> <span>Ryan Rife </span> </p> <p> <span>Senior Software Developer </span> </p> <p> <span>Pacific Western Technologies</span> </p> <p> <span>(865) 483-0554 x118</span> </p> <p> <span> </span> </p> <p> <span>"Lucky Charms Has More </span> </p> <p> <span>Marshmallows Than Cat Food."</span> <span> </span> </p> <p> <span> </span> </p> </div> </blockquote> </body> </html> |
