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<div class=Section1><pre><font size=2 face="Courier New"><span
style='font-size:10.0pt'>I am trying to use Proj4 v4.4.9 to implement RSO support as described below from a 2004 thread, but it does not appear that the changes discussed in the thread ever made it into Proj4. Am I missing something or did these changes never get made? Does anyone have a copy of the code that implemented the 'gamma_c' parameter for the 'omerc' projection?</span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'> </span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>Thanks,</span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'> </span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>Mike</span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>Global Mapper Software LLC</span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>mike@globalmapper.com</span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'> </span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>-------------------------------------</span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'> </span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>An update:</span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'> </span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>The forward script:</span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'> </span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>opts="+proj=omerc +a=6377298.556 +rf=300.8017 +lat_0=4 +lonc=115 \</span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'> +alpha=53d18'56.9537 +gamma_c=53d7'48.3685 +k_0=0.99984 \</span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'> +x_0=590476.87 +y_0=442857.65"</span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'> </span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>replicates the example for </span></font>Borneo in EPSG #7 and</pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'> </span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>opts="+proj=omerc +a=6378206.4 +es=.006768657997291094 \</span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>+k=.9999 +lonc=-133d40 +lat_0=57 +alpha=-36d52'11.6315 \</span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>+x_0=818585.5672270928 +y_0=575219.2451072642 +units=us-ft"</span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'> </span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>replicates the fortran version of gctp to 0.0005 us-ft.</span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'> </span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>You can see that +gamma_c is the only difference in the usage.</span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'> </span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>I would appreciate </span></font>Malaysia specs and bench values as well as more</pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>bench values for </span></font>Borneo.</pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'> </span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>Thanks.</span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'> </span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>About another weeks work to check inverse and other options and</span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>clean up documentation.</span></font></pre>
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