No, that's probably not the issue. I have tried it and it didn't help.
This throws the same exception:
File gridFile = new File("C:\\Dev\\VTS\\Grids\\WA\\wohpgn.gsb");
URL url = URLs.fileToUrl(gridFile);
NTv2Transform transform = new NTv2Transform(url.toURI());
S.
2018-07-25 10:15 GMT+02:00 Ian Turton <[email protected]>:
> I'm not sure if this is the issue but the preferred way to change a file
> into an url is to use the Urls.toUrl method.
>
> Ian
>
> On Tue, 24 Jul 2018, 21:46 Stanislav Dušek, <[email protected]>
> wrote:
>
>> Hello,
>>
>> I'm trying to use GeoTools to calculate the grid coverage based on NTv2
>> .gsb file.
>> However, I'm unable to create the instance of NTv2Transform.
>> When I use this piece of code:
>>
>> File gridFile = new File("C:\\Dev\\VTS\\Grids\\WA\\wohpgn.gsb");
>> NTv2Transform transform = new NTv2Transform(gridFile.toURI());
>>
>> I get this exception:
>>
>> Exception in thread "main"
>> org.opengis.referencing.NoSuchIdentifierException:
>> Could not locate NTv2 Grid File file:/C:/Dev/VTS/Grids/WA/wohpgn.gsb
>> at org.geotools.referencing.operation.transform.
>> NTv2Transform.<init>(NTv2Transform.java:105)
>> at com.frequentis.example.Main.transformFromNad27UsingGrid(
>> Main.java:75)
>> at com.frequentis.example.Main.main(Main.java:90)
>>
>> Am I using the syntax properly?
>> Is there some other way of how to achieve that?
>> Do you know about some workaround?
>>
>> Btw, I was trying it with versions 18.4 and 19.1 with Maven.
>>
>> Thank you,
>> Stanislav
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>
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