[mapguide-users] Creating and adding layers

Kenneth Skovhede, GEOGRAF A/S ks at geograf.dk
Mon Nov 9 06:35:26 EST 2009


MapGuide has many great geospatial operations, but if you
are merely interrested in displaying a raster based map,
perhaps you can do it, using only OpenLayers:
http://openlayers.org

I know that there are some simple Geo servers that specialize in
serving tiles from TIFF, rather than the full function package that 
MapGuide has.

I can't remember the name of the server they usually mention,
but you can ask on the list, or search the archives.


Regards, Kenneth Skovhede, GEOGRAF A/S



oshan skrev:
> Hi Kenneth 
>
> I managed to get a student version of ArcGIS. I created a tiff and a world
> file after using some PNG map images. I placed the two generated files into
> a single folder and imported it using maestro. After defining the layers and
> map and setting up the extent I was able to preview it on mapguide. 
>
> I looked in the FdoGdalNotes for the plugin
> (http://home.gdal.org/dl/gdal14_vc8/) but the links doesn't work. In any
> case I'm able to view the images so maybe all the plugins are in place in my
> installation!
>
> I wanted to add a layer on top of this map (by the way this a map of
> Queensland, Australia). This new layer is going to be some rural region
> within the state. I cut out this region from the original map (base map) and
> created a separate image with just that rural area surrounded with
> transparent background so that if I superimpose them it will appear at the
> right location on the base map. I created a new layer for this image using
> the same procedure I describe before. Only problem is the tiff format didn't
> recognise transparency and made the background white. So when I place the
> small region above the state only thing I can see is that!
>
> So now I'm wondering...: if my application is not going to handle any
> geospatial vector data, am I making it harder for my self by using MG os?? I
> mean I would be able to use normal HTML,css,js, and jsp to do this. I could
> use the z index in css to put bunch of images together and use js to turn
> them on and off. But of course I will have to do the zooming, paning,
> context menus, toolbars etc from scratch so I don't know if I will hit the
> brick wall somewhere down the track! 
>
>
> Kenneth Skovhede, GEOGRAF A/S wrote:
>   
>> Rasters are notoriously difficult to get to work.
>>
>> First of, you need to run the server from the console with the
>> CPL_DEBUG=on:
>> http://trac.osgeo.org/fdo/wiki/FdoGdalNotes
>> (See at the bottom of the page).
>>
>> And you have to create the gdalplugin folder yourself, so you get the 
>> file layout
>> as described on FdoGdalNotes page.
>>
>> Your MapDefinition coordinate system and raster coordinate system MUST 
>> match 100%.
>>
>> Also look in the error log file:
>> C:\Program Files\MapGuideOpenSource2.0\Server\Logs\Error.log
>>
>> For a free vector editor, try Kosmo GIS:
>> http://www.opengis.es/
>>
>> Good luck!
>>
>> Regards, Kenneth Skovhede, GEOGRAF A/S
>>
>>
>>
>> oshan skrev:
>>     
>>> By the way I'm using mapguide os 2.0 with jsp extension. does this come
>>> with
>>> the GDAL plugin to handle all the raster data? I checked in my bin folder
>>> and there is no gdalplugins folder! But inside FDO I have a file called
>>> gdal14.dll. If this is not enough where do I get this full plugin from
>>> and
>>> which version. The version of the gdal14.dll is 1.4.3.0
>>>
>>> cheers 
>>>
>>>
>>>
>>> oshan wrote:
>>>   
>>>       
>>>> Hi Kenneth 
>>>>
>>>> Thanks for you reply. I'm basically trying to get a map displayed in the
>>>> ajax viewer and the map I'm planning to use is a raster image.
>>>>
>>>> I tried doing it using map guide maestro but I couldn't get the image
>>>> displayed. I tnk its something to do with the coordinate system may be
>>>> its
>>>> way off the screen.
>>>>
>>>> I was looking at GDAL and found this link. It kind shows how to add
>>>> coordinate to raster image. I'll try that and see if it works.
>>>> http://trac.osgeo.org/gdal/wiki/UserDocs/RasterProcTutorial
>>>>
>>>> By the way do you mean data files like .shp? what is a good free client
>>>> I
>>>> used to create such data? 
>>>>
>>>> Thanks
>>>>
>>>>
>>>>
>>>> Kenneth Skovhede, GEOGRAF A/S wrote:
>>>>     
>>>>         
>>>>> There is a short (incomplete) guide here that explains the procedure 
>>>>> from a users viewpoint:
>>>>> http://trac.osgeo.org/mapguide/wiki/maestro/UserGuide
>>>>>
>>>>> If you have MapGuide Enterprise, you can get Studio for free, which has 
>>>>> a manual in the "Help" menu.
>>>>>
>>>>> If you need to create data as well, you need a GIS client application, 
>>>>> such as Autocad Map, ArcGIS or MapInfo.
>>>>> (There are free clients avalible as well)
>>>>>
>>>>> Your question is a bit vague, so if this is an answer to another 
>>>>> question, can you explain your current setup?
>>>>>
>>>>> Regards, Kenneth Skovhede, GEOGRAF A/S
>>>>>
>>>>>
>>>>>
>>>>> oshan skrev:
>>>>>       
>>>>>           
>>>>>> Hi
>>>>>>
>>>>>> I want to know how to create layers? 
>>>>>>
>>>>>> Say that you have a map and you want to create layers for political
>>>>>> divisions. How would you go about doing this?
>>>>>>
>>>>>> I ask this before but I didn't get any answer. My apologies if its a
>>>>>> stupic
>>>>>> question! Since I don't really have any good vectored based maps, is
>>>>>> it
>>>>>> possible to use a jpeg as a base image? How do I achieve this?
>>>>>>
>>>>>> I appreciate any help
>>>>>> Thanks
>>>>>>   
>>>>>>         
>>>>>>             
>>>>> _______________________________________________
>>>>> mapguide-users mailing list
>>>>> mapguide-users at lists.osgeo.org
>>>>> http://lists.osgeo.org/mailman/listinfo/mapguide-users
>>>>>
>>>>>
>>>>>       
>>>>>           
>>>>     
>>>>         
>>>   
>>>       
>> _______________________________________________
>> mapguide-users mailing list
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>>
>>
>>     
>
>   
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