[Proj] Convert MODIS Sinusoidal to WGS84

[Juergen Stumpe]

Perfect. Thanks!!

On Tue, Mar 27, 2018 at 1:18 PM, Kristian Evers <kreve at sdfe.dk> wrote:
> You can control the output format with the -f option:
>
> echo 4447802.078667 -1111950.519667 | proj -I -f %.3f +proj=sinu
>
> Works for both proj and cs2cs.
>
> /Kristian
>
> On 27 Mar 2018, at 13:13, Juergen Stumpe <jstumpe.ho at gmail.com> wrote:
>
> Hi Kristian,
>
> Thanks for the fast reply and explanation. It works.
>
> Is there also an option to specify the output format? In the given
> example, the output format is DMS.
>
> To get the result in decimal degrees (DD), is there an PROJ parameter
> option to specify the output to be in DD,
> or is an additional, separate PROJ conversion needed, to convert from DMS to
> DD?
>
> Bye,
>
> Juergen
>
> On Tue, Mar 27, 2018 at 12:23 PM, Kristian Evers <kreve at sdfe.dk> wrote:
>
> Hi Jürgen,
>
> Try this instead:
>
> $ echo 4447802.078667 -1111950.519667 | cs2cs +proj=sinu +to +proj=latlong
> +datum=WGS84
> 40d34'27.915"E  10d3'18.399"S 0.000
>
> WGS84 is not an operation in PROJ. It is however a recognised as a datum
> that can be used in
> conjunction with an operation such as “latlong”.
>
> Since what you are doing is really just converting projected sinusoidal
> coordinates to it’s originating
> latitude and longitude you can also just do
>
> $ echo 4447802.078667 -1111950.519667 | proj -I +proj=sinu
> 40d34'27.915"E 10d3'18.399”S
>
> To reach the same result.
>
> /Kristian
>
> On 27 Mar 2018, at 12:13, Juergen Stumpe <jstumpe.ho at gmail.com> wrote:
>
> Hello,
>
> I'm trying to convert Modis meter values to WGS84 decimal degrees,
> using the PROJ4 command line, but I'm not able to set the parameters
> correctly.
>
> E.g. the command "echo 4447802.078667 -1111950.519667 | cs2cs
> +proj=sinu +to +proj=WSG84" fails with "projection initialization
> failurecause: Unknown error".
>
> Does anybody know how the define the PROJ4 command line properly, in
> order to achieve a conversion with parameters according the attached
> TWCC screen shot?
>
> Thanks in advance!
>
> Juergen
> <TWCC Screen Shot.PNG>_______________________________________________
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