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It looks correct to me. Try using a smaller buffer to better determine
accuracy.<br>
<br>
For the second question, you have already asked that in another thread.<br>
The AJAX viewer shows selection data, so try looking at the
selection.aspx files,<br>
and see how it works.<br>
<pre class="moz-signature" cols="72">Regards, Kenneth Skovhede, GEOGRAF A/S
</pre>
<br>
<br>
padmini godavarthi skrev:
<blockquote cite="mid:1240495904995-2683455.post@n2.nabble.com"
type="cite">
<pre wrap="">Hi Kenneth,
Thanku very much for ur help.............
i did the coordinate system override as per ur instructions.
It works fine
but i felt that the buffer feature is not coming accurately??
what was the problem????????????????????????????
i mean by observing closely its not an accurate circle(buffer layer).
<a class="moz-txt-link-freetext" href="http://n2.nabble.com/file/n2683455/pic.jpeg">http://n2.nabble.com/file/n2683455/pic.jpeg</a>
2)secondly i want to retrieve the parcel_ids that are included or
intersected in the buffer layer.How is it possible ? can u send me the
sample code?????????
Thanks in advance.
Regards,
Padmini.
Kenneth Skovhede, GEOGRAF A/S wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Thats because the Sheboygan data uses a true georeferenced coordinate
system,
and your data is using a non-georeferenced system, like XY-M.
Arbitrary should be understood as "non-georeferenced".
If your data is not in the same projection as the map, you cannot use
the buffer feature.
This then returns to my initial statement: "Coordinate System Override",
which can
set the data coordinate system to match the maps.
Can you please report what happened with with the suggestions I made,
regarding the coordinate system overrides?
Regards, Kenneth Skovhede, GEOGRAF A/S
padmini godavarthi skrev:
</pre>
<blockquote type="cite">
<pre wrap="">Hi,
In my data
bool arbitraryMapSrs = (srsMap.GetType() ==
MgCoordinateSystemType.Arbitrary);
arbitraryMapSrs comes as true but in sheboygan data it comes as false
if (arbitraryMapSrs)
mapSrsUnits = srsMap.GetUnits();
In mydata mapSrsUnits comes as "meter" but in sheboygan data it comes as
null
so that
if ((arbitraryDsSrs != arbitraryMapSrs) || (arbitraryDsSrs &&
(dsSrsUnits
!= mapSrsUnits)))
{
excludedLayers++;
continue;
}
In my data excludedLayers comes as 1 and where as in sheboyan data this
condition fails....................
Can u plz provide me the solution?????????????
Regards,
Padmini.
Kenneth Skovhede, GEOGRAF A/S wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Why do you mention packages?
excludedLayers is incremented because the data coordinate system is not
the same as the map coodinate system.
Please comment on what happend when you attempted my previous
suggestions.
Regards, Kenneth Skovhede, GEOGRAF A/S
padmini godavarthi skrev:
</pre>
<blockquote type="cite">
<pre wrap="">Hi Kenneth,
Thanks for ur suggestions.
I have created a package using OGR provider but in the buffering i
found
some problem that
// exclude layer if:
// the map is non-arbitrary and the layer is arbitrary or
vice-versa
// or
// layer and map are both arbitrary but have different
units
//
if ((arbitraryDsSrs != arbitraryMapSrs) || (arbitraryDsSrs
&&
(dsSrsUnits != mapSrsUnits)))
{
excludedLayers++;
continue;
}
it gives difference to my data and sheboygan sample data
so that in my code excludedLayers is incremented to 1 so i didnt get
the
buffer features
can u plz tell me the solution?????????????????
Regards,
Padmini.
Kenneth Skovhede, GEOGRAF A/S wrote:
</pre>
<blockquote type="cite">
<pre wrap="">I'm not sure that provider is case insensitive.
Try adding the file again, but with the name "PROPERTIES.shp".
Also, try creating a folder, and place the files in the folder.
Then try to use the "External files" and point to the folder.
Also try pointing directly to the file.
When the "Test connection" is successfull, try clicking the
rightmost button in the "coordinate system override" field, and
it will show you what the provider returns as the coordinate system.
Alternatively, try using the OGR provider instead of the SHP provider.
Regards, Kenneth Skovhede, GEOGRAF A/S
padmini godavarthi skrev:
</pre>
<blockquote type="cite">
<pre wrap="">Hi Keneneth,
First of all thanks for ur patience
i have uploaded all the files but i didnt get the coordinate system
<a class="moz-txt-link-freetext" href="http://n2.nabble.com/file/n2676400/file.jpeg">http://n2.nabble.com/file/n2676400/file.jpeg</a>
again i did anything wrong??????????
Regards,
Padmini.
Kenneth Skovhede, GEOGRAF A/S wrote:
</pre>
<blockquote type="cite">
<pre wrap="">IIRC Shape files consist of more than just the SHP file.
You must upload all the "Properties.*" files to the datasource,
even if the upload file dialog is misleading (you must select "All
files" to see them).
A ticket for this problem is here.
<a class="moz-txt-link-freetext" href="http://trac.osgeo.org/mapguide/ticket/783">http://trac.osgeo.org/mapguide/ticket/783</a>
Regards, Kenneth Skovhede, GEOGRAF A/S
padmini godavarthi skrev:
</pre>
<blockquote type="cite">
<pre wrap="">Hi,
but i did it as per ur instruction but it didn't come
<a class="moz-txt-link-freetext" href="http://n2.nabble.com/file/n2676097/over.jpeg">http://n2.nabble.com/file/n2676097/over.jpeg</a>
my code as same as previous
MgResourceIdentifier featSourceId = new
MgResourceIdentifier(selLayer.GetFeatureSourceId());
MgSpatialContextReader ctxs =
featureSrvc.GetSpatialContexts(featSourceId, false);
String srsDefDs = "";
if (ctxs != null && ctxs.ReadNext())
srsDefDs = ctxs.GetCoordinateSystemWkt();
in srsDefDs i got null
does i did any thing wrong
Regards,
Padmini.
Kenneth Skovhede, GEOGRAF A/S wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Yes, your FeatureSource reports an empty coordinate system, so you
have
to specify it manually.
There is a short explanation on how to use overrides here:
<a class="moz-txt-link-freetext" href="http://trac.osgeo.org/fdo/wiki/FdoGdalNotes#OverridingCoordinateSystems">http://trac.osgeo.org/fdo/wiki/FdoGdalNotes#OverridingCoordinateSystems</a>
Regards, Kenneth Skovhede, GEOGRAF A/S
padmini godavarthi skrev:
</pre>
<blockquote type="cite">
<pre wrap="">Hi,
thanks but is it necessary overriding a coordinate system????????
How it willbe done???????
can u provide me some guidance???????
i have seen ur link but no data available in that for overrides
coordinate
system
<a class="moz-txt-link-freetext" href="http://trac.osgeo.org/mapguide/wiki/maestro/UserGuides/RasterFeatureSource">http://trac.osgeo.org/mapguide/wiki/maestro/UserGuides/RasterFeatureSource</a>
can u plz tell me????????????
Regards,
Padmini.
Kenneth Skovhede, GEOGRAF A/S wrote:
</pre>
<blockquote type="cite">
<pre wrap="">No, I meant "Coordinate System Override", which is located on
the
FeatureSource editor at the bottom.
See screenshots here:
<a class="moz-txt-link-freetext" href="http://trac.osgeo.org/mapguide/wiki/maestro/UserGuides/RasterFeatureSource">http://trac.osgeo.org/mapguide/wiki/maestro/UserGuides/RasterFeatureSource</a>
Regards, Kenneth Skovhede, GEOGRAF A/S
padmini godavarthi skrev:
</pre>
<blockquote type="cite">
<pre wrap="">Hi,
Thanks for ur reply
u man to say in mapdefinition(in maestro)????????????????
iam using maestro and i have selected the coordinate system as
<a class="moz-txt-link-freetext" href="http://n2.nabble.com/file/n2675676/coor.jpeg">http://n2.nabble.com/file/n2675676/coor.jpeg</a>
does i did any thing wrong???????????????
Regards,
Padmini.
Kenneth Skovhede, GEOGRAF A/S wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Have you tried to add a coordinate system override,
using Maestro or Studio?
Regards, Kenneth Skovhede, GEOGRAF A/S
padmini godavarthi skrev:
</pre>
<blockquote type="cite">
<pre wrap=""> Hi,
iam using mapguide opensource 2.0 (with .net 2.0 +IIS 5.1)
i want to make a buffer to my data
the buffer function works fine for this sheboygan data but
not
for
my
data
i have debugged the application and i got the error at
MgResourceIdentifier featSourceId = new
MgResourceIdentifier(selLayer.GetFeatureSourceId());
MgSpatialContextReader ctxs =
featureSrvc.GetSpatialContexts(featSourceId, false);
String srsDefDs = "";
if (ctxs != null && ctxs.ReadNext())
srsDefDs = ctxs.GetCoordinateSystemWkt();
In Sheboygan data
srsDefDs comes as GEOGCS["WGS84 Lat/Long's, Degrees, -180
==>
+180",DATUM["D_WGS_1984",SPHEROID["World_Geodetic_System_of_1984",6378137,298.257222932867]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]]
but for my data
srsDefDs comes as null
Actually my data is in coordinate system
GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS
84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4326"]]
can u plz tell me the solution????????????????????????
plzzz
Regards,
Padmini.
</pre>
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