[mapserver-users] Projection takes less time than no projection ?
Hi All, I'm using MapServer to generate tiles to overlay on a GoogleMaps base layer. My data files are WGS84 shapefiles. So my current mapfile was looking like : MAP ... PROJECTION init=epsg:3785 END ... LAYER ... PROJECTION init=epsg:4326 END ... END ... END I was wondering about improving response time by disabling on-the-fly projection. So I did pre-project my shp into spherical Mercator first. And my new mapfile now looks like : MAP ... PROJECTIONproj=merca=6378137b=6378137lat_ts=0.0 lon_0=0.0x_0=0.0y_0=0k=1.0units=mnadgrids=@null no_defs END ... LAYER ... END ... END I do get the same tiles. But when asking a single tile using both mapfile, I noticed that the response time was higher (about +10%) when the second mapfile was used ! Do you have any idea about what's going on ? Thanks Regards Clément ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Projection takes less time than no projection ?
Clément, There is an optimized route for reprojection from 4326 - 3857 in MapServer (see http://lists.osgeo.org/pipermail/mapserver-dev/2012-February/011956.html) so it can be very fast. I can't see how if could be faster than no projection. Perhaps the 10% is just within the margin of error? Or did you do the test 1000's of times and average the results? That might be what it takes to really see a difference. Mike -- Michael Smith US Army Corps Remote Sensing GIS/Center From: Clément MONIER clement.mon...@v-trafic.commailto:clement.mon...@v-trafic.com Date: Tuesday, December 4, 2012 7:23 AM To: mapserver-users@lists.osgeo.orgmailto:mapserver-users@lists.osgeo.org mapserver-users@lists.osgeo.orgmailto:mapserver-users@lists.osgeo.org Subject: [mapserver-users] Projection takes less time than no projection ? Resent-From: Michael Smith michael.sm...@usace.army.milmailto:michael.sm...@usace.army.mil Hi All, I’m using MapServer to generate tiles to overlay on a GoogleMaps base layer. My data files are WGS84 shapefiles. So my current mapfile was looking like : MAP … PROJECTION init=epsg:3785 END … LAYER … PROJECTION init=epsg:4326 END … END … END I was wondering about improving response time by disabling on-the-fly projection. So I did pre-project my shp into spherical Mercator first. And my new mapfile now looks like : MAP … PROJECTIONproj=merca=6378137b=6378137lat_ts=0.0 lon_0=0.0x_0=0.0y_0=0k=1.0units=mnadgrids=@null no_defs END … LAYER … END … END I do get the same tiles. But when asking a single tile using both mapfile, I noticed that the response time was higher (about +10%) when the second mapfile was used ! Do you have any idea about what’s going on ? Thanks Regards Clément ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Projection takes less time than no projection ?
Yes, you're right ! thanks a lot ! My projection (epsg dat) def file had some errors. I made some corrections on my proj espg dat files and it works fine with PROJECTION init=epsg:3785 END Everywhere Response times now make sense : +10% when projection's enabled (on a specific test tile) De : TC Haddad [mailto:tchad...@gmail.com] Envoyé : mardi 4 décembre 2012 17:29 À : Clément MONIER Objet : Re: [mapserver-users] Projection takes less time than no projection ? Strange. Maybe you should check your proj EPSG code list and search for 3785 to see if it is listed there (maybe it is missing for some reason?). Or if it is in there, compare it to the defs below to look for any mistakes Tanya On Tue, Dec 4, 2012 at 7:57 AM, Clément MONIER clement.mon...@v-trafic.commailto:clement.mon...@v-trafic.com wrote: I did try but it didn't give me the same map view (though requested with TILE=X+Y+Z) I don't know why, but (only in the new mapfile version) if I don't put a MAP projection block like this PROJECTION proj=merc a=6378137 b=6378137 lat_ts=0.0 lon_0=0.0 x_0=0.0 y_0=0 k=1.0 units=m nadgrids=@null no_defs END Instead of PROJECTION init=epsg:3785 END I don't get the same map's view De : TC Haddad [mailto:tchad...@gmail.commailto:tchad...@gmail.com] Envoyé : mardi 4 décembre 2012 16:51 À : Clément MONIER Objet : Re: [mapserver-users] Projection takes less time than no projection ? did you try this option for comparison? MAP ... PROJECTION init=epsg:3785 END ... LAYER ... PROJECTION init=epsg:3785 END ... END ... END On Tue, Dec 4, 2012 at 7:23 AM, Clément MONIER clement.mon...@v-trafic.commailto:clement.mon...@v-trafic.com wrote: MAP ... PROJECTION init=epsg:3785 END ... LAYER ... PROJECTION init=epsg:4326 END ... END ... END ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
[mapserver-users] Problem with ODBC connection
I want to read the contents of the dbf from a shapefile. I set up an ODBC connection, and have been successful on a development machine, in that I can read the dbf and get the results I was looking for. However, when I move the application to another server, I get the following error message: Warning: odbc_connect(): SQL error: [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified, SQL state IM002 in SQLConnect in C:\ms4w_304\apps\geoparcels\htdocs\php\selectparcel.php on line 14 Could Not Connect to ODBC Database! I was under the impression that MapServer had built-in suffort for shapefiles and DBF. I checked over the php.ini file, but didn't find anything. So I am confused as to why this code works on one machine and not another. Any ideas what to look for? ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] MapServer and 24bit Images
I display true-color imagery all the time. I suspect that's not what you're trying to do though. You'll have to be more specific on format, perhaps post a layer definition? Steve -Original Message- From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Saint Sent: Monday, December 03, 2012 10:06 AM To: mapserver-users@lists.osgeo.org Subject: [mapserver-users] MapServer and 24bit Images Dear all, I would like to have this confirmation, MapServer support 24bit image with 3 bands? I have one 24bit image 1 band and I can see in the browser but the other with 3 bands I can't. Only appear the the outline line of the class e not the image. Many thanks José Santos - José Santos GIS Analyst -- View this message in context: http://osgeo-org.1560.n6.nabble.com/MapServer-and-24bit-Images-tp5020409.html Sent from the Mapserver - User mailing list archive at Nabble.com. ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Problem with ODBC connection
Disregard- I forgot to create the odbc data source in Windows on the other server. I set that up and it's working fine now. Thanks, BB -Original Message- From: Stephen Woodbridge [mailto:wood...@swoodbridge.com] Sent: Tuesday, December 04, 2012 12:59 PM To: mapserver-users@lists.osgeo.org Subject: Re: [mapserver-users] Problem with ODBC connection On 12/4/2012 12:45 PM, Bistrais, Bob wrote: I want to read the contents of the dbf from a shapefile. I set up an ODBC connection, and have been successful on a development machine, in that I can read the dbf and get the results I was looking for. However, when I move the application to another server, I get the following error message: Warning: odbc_connect(): SQL error: [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified, SQL state IM002 in SQLConnect in C:\ms4w_304\apps\geoparcels\htdocs\php\selectparcel.php on line 14 Could Not Connect to ODBC Database! I was under the impression that MapServer had built-in suffort for shapefiles and DBF. I checked over the php.ini file, but didn't find anything. So I am confused as to why this code works on one machine and not another. Any ideas what to look for? It does have native support for reading shapefiles. But if you are using OGR that is not mapserver native support. What does you LAYER definition look like? Also the you reference php.ini are you using mapscript? Then you might be using a PHP to read the shpaefile and not mapserver. You need to show us more of what you are trying to do. Then we can probably help slove this. -Steve W. ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Zooming
You could write a onClick handler that takes a zoom value, sets a hidden
variable called zoom and submits the form.
function doZoom(zoom) {
// set value of zoom hidden variable
// submit the form
}
input type=hidden name=zoom value=set programmatically
img src=dezoom.png onclick=doZoom(-2) / img src=zoom.png
onclick=doZoom(2) /
Steve
-Original Message-
From: mapserver-users-boun...@lists.osgeo.org
[mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Arthur Delorme
Sent: Monday, December 03, 2012 8:03 AM
To: mapserver-users@lists.osgeo.org
Subject: [mapserver-users] Zooming
Hello,
Is there a way to perform a zoom with input instead of select or radio?
I used to do that with the following code but it's not working anymore on
recent versions of Firefox:
input type=image name=zoom src=dezoom.png value=-2 / input
type=image name=zoom src=zoom.png value=2 /
Thank you,
Arthur
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[mapserver-users] System.AccessViolationException on mapscriptPINVOKE.delete_symbolObj
I'm using C Sharp MapScript to access MapServer (MS4W 3.0.6). I'm creating a new mapObj from an almost empty MAPFILE and then dynamically add layers to the map and then calling draw to generate an image. I'm also dynamically adding symbolObjs to the map's symbolset for the layers to reference. This all works great the vast majority of the time, but on rare occasions, sometime after the map has been generated, I receive the following AccessViolationException when garbage collection is attempting to clean up the MapServer objects. System.AccessViolationException was unhandled Message=Attempted to read or write protected memory. This is often an indication that other memory is corrupt. Source=mapscript_csharp StackTrace: at OSGeo.MapServer.mapscriptPINVOKE.delete_symbolObj(HandleRef jarg1) at OSGeo.MapServer.symbolObj.Dispose() at OSGeo.MapServer.symbolObj.Finalize() InnerException: I've tried disposing of the map itself, its symbolset, as well as each symbolObj item in that symbolset by calling Dispose on each, but doing so neither causes the error to happen immediately upon calling Dispose (instead it still only happens when garbage collection runs) nor does it do anything to resolve the issue. I don't see any reference to symbolObj in the map layers (looks like it just holds a symbol name and/or index) nor anywhere else that stands out as a logical place to look, so I don't see anything else to dispose. Does anyone have any idea of where I could look for any symbolObjs which have been allocated so I can dispose of them so that garbage collection does not choke when attempting to dispose of them for me? Am I barking up the wrong tree and should be looking somewhere else entirely rather than focusing on symbolObj? Thanks for any guidance that can be provided, John ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
