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<div dir="auto">Dear Jeff, </div>
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<div dir="auto">I confirm Martin's interpretation. The Ground Track Oblique Cassini is a new projection method which we would like to have it included in proj4, as done for the landsat projection (https://proj.org/operations/projections/lsat.html). Is this
something that can be done?</div>
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<div dir="auto">Alessandro </div>
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<div dir="auto" style="font-size:85%; color:#575757">Sent from my Samsung Galaxy smartphone.</div>
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<div>-------- Original message --------</div>
<div>From: Jeff McKenna <jmckenna@gatewaygeomatics.com> </div>
<div>Date: 16/02/2020 15:50 (GMT+01:00) </div>
<div>To: proj@lists.osgeo.org </div>
<div>Subject: Re: [PROJ] Adding new projection to Proj4 </div>
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<div class="PlainText">ok thanks for clarifying Martin. -jeff<br>
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On 2020-02-16 9:52 a.m., Martin Desruisseaux wrote:<br>
> I think Alessandro was proposing to add a new "projection method" (i.e. <br>
> another set of mathematical formulas for doing the projection). This is <br>
> a different work than assigning an EPSG code, which is more about <br>
> setting parameter values to use with pre-existing formulas. If this is <br>
> the case, then Alessandro's proposal and EPSG change request would be <br>
> orthogonal tasks.<br>
> <br>
> Martin<br>
> <br>
> Le 16/02/2020 à 13:41, Jeff McKenna a écrit :<br>
> <br>
>> Hi Alessandro,<br>
>><br>
>> A new projection can be added into the EPSG registry by filing a <br>
>> change request at: <a href="http://www.epsg.org/EPSGDataset/Makechangerequest.aspx">
http://www.epsg.org/EPSGDataset/Makechangerequest.aspx</a><br>
>><br>
>> I have went through that process several times now, to add a new <br>
>> projection into EPSG, that is then automatically leveraged by software <br>
>> projects, such as PROJ. Of course it takes time, first for the EPSG <br>
>> committee to review your request, and then also for the new projection <br>
>> to propagate to all software projects.<br>
>><br>
>> -jeff<br>
> <br>
> <br>
> _______________________________________________<br>
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> PROJ@lists.osgeo.org<br>
> <a href="https://lists.osgeo.org/mailman/listinfo/proj">https://lists.osgeo.org/mailman/listinfo/proj</a><br>
<br>
<br>
-- <br>
Jeff McKenna<br>
MapServer Consulting and Training Services<br>
<a href="https://gatewaygeomatics.com/">https://gatewaygeomatics.com/</a><br>
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