Chen, The problem appear strange but why not try saving both images separately in ermapper format (.ers)... and display? Cheers, Mpaka
-----Original Message----- From: Trevor Chen [mailto:[EMAIL PROTECTED]] Sent: Saturday, October 05, 2002 2:50 PM To: [EMAIL PROTECTED] Subject: Registration of images Hi All, I brought one SPOT and one IKONOS images both in GeoTiff format and having same projection (UTM 39) and datum (WGS84) into ERMAPPER but they could not register each other very well. The IKONOS image was apparently in wrong place. I displayed them together in ArcMap and they registered very well. They were in right place. I appreciate it if anyone could figure out what happens. Something wrong with ERMapper? Cheers, Huapeng Chen GIS Specialist, Aramco, Saudi Arabia >From: [EMAIL PROTECTED] (List Server) >Reply-To: [EMAIL PROTECTED] >Subject: ERMAPPER-L Daily Digest >Date: Thu, 3 Oct 2002 03:28:27 +0800 > >---------------------------------------------------------------------- > >Date: Tue, 1 Oct 2002 16:52:52 -0400 (EDT) >Subject: Comparing Gridded Datasets >From: "Greg Reinecke" >Reply-To: [EMAIL PROTECTED] >Hello List, > >I have been working with a client that has numerous gridded elevation >datasets produced over time. We wish to compare changes between two >datasets that cover the same extents on the ground and have the same pixel >dimensions. I tried using the provided formula for calculating the >difference between two datasets but just can't seem to get the desired >results (difference between the two datasets). I suspect I am doing >something wrong in the algorithm. Any insight would be much appreciated. > >********************************************** >Gregory T. Reinecke >President & CEO >Geographic Technology & Resource Systems, Inc. >P.O.Box 651023 >Potomac Falls, VA 20165 >www.gtrsystems.com > >---------------------------------------------------------------------- > >From: "John Cady" >Subject: Re: Comparing Gridded Datasets >Date: Tue, 1 Oct 2002 21:04:18 -0600 >Reply-To: [EMAIL PROTECTED] >Greg, > >Have you combined the datasets into a single multiple-layer dataset:? You >need to do that to do so in order to apply a simple difference formula in ER >Mapper. The method works well. > >John Cady >______________________________________ >----- Original Message ----- >From: "Greg Reinecke" >To: >Sent: Tuesday, October 01, 2002 2:52 PM >Subject: Comparing Gridded Datasets > > > > Hello List, > > > > I have been working with a client that has numerous gridded elevation > > datasets produced over time. We wish to compare changes between two > > datasets that cover the same extents on the ground and have the same pixel > > dimensions. I tried using the provided formula for calculating the > > difference between two datasets but just can't seem to get the desired > > results (difference between the two datasets). I suspect I am doing > > something wrong in the algorithm. Any insight would be much appreciated. > > > > ********************************************** > > Gregory T. Reinecke > > President & CEO > > Geographic Technology & Resource Systems, Inc. > > P.O.Box 651023 > > Potomac Falls, VA 20165 > > www.gtrsystems.com > > > > ----------------------------------------------------------- > > > > To make changes to your subscription, please visit our website, >http://www.ermapper.com/technicl/ermapperl/index.htm > > > > > > > >---------------------------------------------------------------------- > >From: "John Cady" >Subject: Re: Comparing Gridded Datasets >Date: Tue, 1 Oct 2002 21:04:27 -0600 >Reply-To: [EMAIL PROTECTED] > >----- Original Message ----- >From: "Greg Reinecke" >To: >Sent: Tuesday, October 01, 2002 2:52 PM >Subject: Comparing Gridded Datasets > > > > Hello List, > > > > I have been working with a client that has numerous gridded elevation > > datasets produced over time. We wish to compare changes between two > > datasets that cover the same extents on the ground and have the same pixel > > dimensions. I tried using the provided formula for calculating the > > difference between two datasets but just can't seem to get the desired > > results (difference between the two datasets). I suspect I am doing > > something wrong in the algorithm. Any insight would be much appreciated. > > > > ********************************************** > > Gregory T. Reinecke > > President & CEO > > Geographic Technology & Resource Systems, Inc. > > P.O.Box 651023 > > Potomac Falls, VA 20165 > > www.gtrsystems.com > > > > ----------------------------------------------------------- > > > > To make changes to your subscription, please visit our website, >http://www.ermapper.com/technicl/ermapperl/index.htm > > > > > > > >---------------------------------------------------------------------- > >From: "Leo Romeijn" >Subject: Gridding memory allocation problem >Date: Wed, 2 Oct 2002 10:09:54 -0500 >Reply-To: [EMAIL PROTECTED] >This is a multi-part message in MIME format. > >------=_NextPart_000_0012_01C269FB.DAF1C260 >Content-Type: text/plain; > charset="us-ascii" >Content-Transfer-Encoding: 7bit > >List, > > I am trying to grid an XYZ text file (482mb), using the Minimum >Curvature option with the defaults, but I keep getting an error message >(listed below), and the status bar stops at about 85%. The terrain is >min: 6m to max: 2400m, there is a big mountain in the scene, coming from >the coastline. Has anyone else run into this problem with the Minimum >Curvature option? I have been successful on smaller areas, but I am >unsure why I am running out of memory or what the problem could be. > >Error Box: >Gridding Terminated Abnormally > >Status box: >Reading Data. >Read 17729803 points, (min:6.000 max:2442.000) >Could not allocate 851030544 bytes of memory >Connection closed. > >Platform: Win2K >Ram: 2GB >Virtual Mem: >C:\ None >D:\1024mb >H:\1024mb >ER Mapper 6.3 > > > >Leo M. Romeijn >Satellite Imaging Corporation >12777 Jones Rd., Suite 370 >Houston, TX 77070, USA >832.237.2900 ext.202, 832.237.2910 (Fax) >[EMAIL PROTECTED] >www.satimagingcorp.com > > > >------=_NextPart_000_0012_01C269FB.DAF1C260 >Content-Type: text/html; > charset="us-ascii" >Content-Transfer-Encoding: quoted-printable > > > > > >charset=3Dus-ascii"> > >6.0.4630.0"> > > > > > > >FACE=3D"Arial">List, > > >LANG=3D"en-us"> >FACE=3D"Arial">I am trying to grid an XYZ text file (482mb), = >usin >FACE=3D"Arial">g = >the >FACE=3D"Arial"> >FACE=3D"Arial">Minimum Curvature option >LANG=3D"en-us"> = >with the defaults >LANG=3D"en-us">, but I keep getting = >an = >error message = >(listed below), = >and the sta >FACE=3D"Arial">t >FACE=3D"Arial">us bar stops at about 85%. >LANG=3D"en-us"> = >The terrain is min: 6m to max: 2400m, there is a = >big mountain in the scene, coming >LANG=3D"en-us"> from >LANG=3D"en-us"> the coastline. >LANG=3D"en-us"> Has anyone else run into this = >problem with the >FACE=3D"Arial">Minimum Curvature option >LANG=3D"en-us">? I have been >LANG=3D"en-us"> successful >LANG=3D"en-us"> = >on smaller areas, but I am unsure why I am running = >out of memory or = >what the problem could be. > > >FACE=3D"Arial">Error >FACE=3D"Arial"> Box: > > Gridding = >Terminate >FACE=3D"Arial">d = >Abnormally > > Status = >box: > > >FACE=3D"Arial">Rea >FACE=3D"Arial">d >FACE=3D"Arial">ing Data >FACE=3D"Arial">... > > Read 17729803 = >points, (min:6.000 max:2442.000) >LANG=3D"en-us"> > > Could not = >allocate 851030544 bytes of memory > > Connection = >closed >FACE=3D"Arial">... > > >FACE=3D"Arial">Platform >FACE=3D"Arial">: Win2K > > Ram: = >2GB > > >FACE=3D"Arial">Virtual >FACE=3D"Arial"> Mem: > > C:\ = >None > > >FACE=3D"Arial">D:\1024 >FACE=3D"Arial">mb > > >FACE=3D"Arial">H:\1024mb > > ER = >Map >FACE=3D"Arial">p >FACE=3D"Arial">er 6.3 > > > > BM_3D__ >LANG=3D"en-us">Leo M. = >Romeijn > > >Black">Satellite Imaging Corporation > > >FACE=3D"Arial">12777 Jones Rd., Suite 370 > > >FACE=3D"Arial">Houston, TX 77070, USA > > >FACE=3D"Arial">832.237.2900 ext.202, 832.237.2910 = >(Fax) > > >FACE=3D"Arial">[EMAIL PROTECTED] > > >FACE=3D"Arial">www.satimagingcorp.com > > > > > >------=_NextPart_000_0012_01C269FB.DAF1C260-- > >---------------------------------------------------------- >To stop receiving the daily digest, send email to [EMAIL PROTECTED] with the command > set mode standard ermapper-l >in the body. _____ Join the world's largest e-mail service with MSN Hotmail. 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