<font color='black' size='3' face='Georgia, Times New Roman, Times, Serif'><font size="3">Hello Leslie.<br>
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Your procedure will work. The results will be heavily aliased, which will look like speckling. Some values of (<i>x</i>₁, <i>y</i></font><font size="3"><font size="3">₁</font>) will be empty unless the destination map is considerably smaller than the source image.<br>
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Regards,<br>
— daan Strebe<br>
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<div style="font-family:helvetica,arial;font-size:10pt;color:black">-----Original Message-----<br>
From: Wang Leslie <wqyuwss@hotmail.com><br>
To: proj <proj@lists.maptools.org><br>
Sent: Mon, May 23, 2016 7:37 am<br>
Subject: [Proj] convert from Equidistant Cylindrical to Eckert I<br>
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<div><span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 12.8px; line-height: normal; widows: 1;">Dear all,</span></div>
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<div style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 12.8px; line-height: normal; widows: 1;">
I'm new to this tool, and hope to get some advise here.</div>
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I'm thinking to use your tool to convert a map picture which is based on Equidistant Cylindrical, to another picture based on Eckert I. Since both of them are 2 dimension only (x,y), what I'm gonna to do is:</div>
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- Use proj command to calculate the new mapped coordinate (x1, y1)</div>
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- Set new pixel value at (x1, y1) using original pixel value (x,y)</div>
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- loop for all pixel at original Equidistant Cylindrical picture</div>
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So can you please help me confirm if one idea can work or not? If yes, what should command line look like? Thanks.</div>
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<div>Best Regards
<div>Leslie Qi Wang</div>
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