Hi Simone and Martin, and thank you for your answers.

Indeed my NetCDF files contains geometries and not rasters.

So I guess I will write my own DataStore.

By the way, does anybody know why the memoryDataStore is not  
recommended ?


Le 14 nov. 08 à 09:58, Simone Giannecchini a écrit :

> Ciao Ben,
> can you describe a bit further how your data is stored in the netcdf
> files? I suspect that the experimental reader is not meant to be used
> with your data.
> If your goal is to be able to read and display vector data, the
> easiest way is to write your own simple datastore implementation.
> Simone.
> -------------------------------------------------------
> Eng. Simone Giannecchini
> GeoSolutions S.A.S.
> Owner - Software Engineer
> Via Carignoni 51
> 55041  Camaiore (LU)
> Italy
>
> phone: +39 0584983027
> fax:      +39 0584983027
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>
>
> http://www.geo-solutions.it
> http://simboss.blogspot.com/
> http://www.linkedin.com/in/simonegiannecchini
>
> -------------------------------------------------------
>
>
> On Tue, Nov 11, 2008 at 1:57 PM, Benoît Thiébault <[EMAIL PROTECTED] 
> > wrote:
>> Hi everyone,
>>
>> I am starting a new project based on GeoTools and I would be very
>> happy to have your advices on where to start. I have started to read
>> the user manual, but it is really HUGE and I don't really know where
>> to start.
>>
>> To make it simple, I have a file containing different geographical
>> informations (cost lines, iso-levels, etc., all in one file) that I
>> would like to draw in a Swing component. This file comes in two
>> formats : an ASCII format issued by another code (which is not
>> standard but lists the points coordinates) or a NetCDF format.
>>
>> My first reflex would be to extract data from the file, store it into
>> a data model that I could pass to the renderer... But in GeoTools, I
>> get very confused with the naming of everything. If I got it right, I
>> guess my cost lines are features of a cost line feature type, iso-
>> levels are features of an iso-level feature type, and so on...
>>
>> Here are my questions :
>>
>> 1) Swing component : I know there is a JMapPane available, but it is
>> apparently not adviced to use it... Is there any alternative ? What
>> would you do ?
>>
>> 2) NetCDF : there is a NetCDF reader here 
>> http://javadoc.geotools.fr/2.5-M3/org/geotools/image/io/netcdf/package-summary.html
>> that doesn't seem to be present in the final release. Should I
>> implement my own reader or is this one mature enough ?
>>
>> 3) I have seen code were the geographical information is read from
>> file, passed in java objects and then loaded in a MemoryDataStore.  
>> The
>> performance is very poor. Should I create my own DataStore (I have
>> read the tutorial about creating a DataStore, but I am not sure it is
>> relevant)
>>
>> 4) I still have some problems with the concept of the DataStore. Is a
>> datastore the data model ? Should I have more than one ? I want to
>> display different data, with different colors, coming (one day) from
>> different files, should I create one datastore for each type of data,
>> for each file ?
>>
>> Thanks for your answers
>>
>> Ben
>>
>>
>>
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>

Benoît Thiébault

   Société Artenum
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   tel: +33 (0)1 46 94 67 54

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