Messages from Usenet group comp.lang.idl-pvwave, compiled by Paulo Penteado
Re: Conversions among datums and geographic coordinates
You can find an executable that does all this at http://crunch.tec.army.mil/software/corpscon/corpscon.html I don't know if you can get source code out of them however. Joe Means wrote: > I would like to fine a routine or group of routines to convert among > datums [NAD27, NAD83], and projection systems [e.g., state plane, UTM] > and coordinates systems [lat-long, cartesian] that can be called from > within IDL I have been looking for this for a while with limited > success. Any one have ideas? > Joe Means
We have compiled a set of C routines as shared libraries which can be called from within IDL to do all those conversions. USGS has a package called PROJ.4 which is cartographic projection software which can be downloaded from their website at http://kai.er.usgs.gov/ftp/PROJ.4/proj.html. Send me an email if you'd like more information on our implementation. Joe Means wrote: > > I would like to fine a routine or group of routines to convert among > datums [NAD27, NAD83], and projection systems [e.g., state plane, UTM] > and coordinates systems [lat-long, cartesian] that can be called from > within IDL I have been looking for this for a while with limited > success. Any one have ideas? > Joe Means -- Bernard Puc AETC, INC. bpuc@va.aetc.com 1225 Jefferson Davis Highway #800 (703) 413-0500 Arlington, VA 22202
Joe Means wrote: I would like to fine a routine or group of routines to convert among datums [NAD27, NAD83], and projection systems [e.g., state plane, UTM] and coordinates systems [lat-long, cartesian] that can be called from within IDL&nbsp; I have been looking for this for a while with limited success.&nbsp; Any one have ideas? Joe Means Howdy, I have some code to transform from Lat/Lon&nbsp; to UTM in meters for NAD27 and NAD83 (actually WGS84).&nbsp; It resides on a different machine so send it to you ASAP. &nbsp; --&nbsp; Ben Tupper Bigelow Laboratory for Ocean Science tupper@seadas.bigelow.org Pemaquid River Company pemaquidriver@tidewater.net &nbsp;