[
Date Prev][
Date Next][
Thread Prev][
Thread Next][
Date Index][
Thread Index]
[
List Home]
|
[udig-devel] Re: Re: Re: GPS Coordinates to Map
|
That's what I was looking for - thanks Paul.
"Paul Ramsey" <pramsey@xxxxxxxxxxxxxxx> wrote in
message news:1162323346.4547a5927a209@xxxxxxxxxxxxxxxxxxx...
> Right, you will have to convert your DDMM.MM numbers into DD.DDD numbers.
>
> If the coordinates are West or South, they need to be multiplied by -1.
>
> So, the formula is (W?S? then -1) * (DD + (MM.MMM / 60)) = DD.DDD
>
> P
>
>
> Quoting Andy Czerwonka <aczerwonka@xxxxxxxx>:
>
>> Thanks. That perfect. The only thing now is to deal with the coordinate
>> system I think. GPS comes in in Lat/Long, but I see there a negative
>> number
>> for the coordinate. I have to get:
>>
>> >> 4916.46,N Latitude 49 deg. 16.45 min. North
>> >> 12311.12,W Longitude 123 deg. 11.12 min. West
>>
>> into a proper coordinate number. For example, uDig shows diffent numbers
>> (negative numbers) and GPS coordinate need to be transformed first. I
>> know - stup question - but for a geospatial newbie, relevent. Apologies
>> in
>> advance.
>>
>> "Jesse Eichar" <jeichar@xxxxxxxxxxxxxxx> wrote in
>> message
>> news:20BF789C-0A55-49FC-9B84-ACB7E0320A73@xxxxxxxxxxxxxxx...
>> > Hi,
>> >
>> > So what exactly are you trying to do here? Just transform from a
>> > point
>> > in world space to a coordinate on the screen? If that is the case
>> > then
>> > you can use one of the context's worldToPoint() methods to make the
>> > transformation. Look at the AbstractContext interface for the code if
>> > you don't want to use the context methods directly (you can create a
>> > ToolContext with the method: ApplicationGIS.createContext(map). Also
>> > all MapGraphics have access to a MapGraphics context. A final place
>> > to
>> > look is the layer's layerToMapTransform().
>> >
>> >
>> > Jesse
>> >
>>
>>
>>
>> _______________________________________________
>> User-friendly Desktop Internet GIS (uDig)
>> http://udig.refractions.net
>> http://lists.refractions.net/mailman/listinfo/udig-devel
>>
>
>
>
>
