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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Dear All, <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>First let me to introduce myself. I am Bashkim Idrizi from North Macedonia. Lecturer of cartography and GIS in geodesy department. <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>Recently on March 18, three changes have been made by our request in EPSG registry database (epsg.org, 2022.009), concerning to CRS of North Macedonia. Based on new updates, there are three CRSs’ for North Macedonian CRS: 6204, 6316 and 9945. <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>Next step toward elimination of problems with usage of CRS’s for North Macedonian spatial data, is defining single default datum transformation for three CRS’s (6204, 6316 and 9945), based on EPSG 6206 for datum transformation between MGI 1901 and WGS84. <o:p></o:p></p><p class=MsoNormal>This is very important for GIS users in our country, because at this moment, overlapping with open data such google map etc., is with very very low accuracy. <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>My request is to create three proj strings as default for upper three mentioned CRS’s, in order to be used by all GIS software users without need for deep knowledge for coordinate systems: <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 width=500 style='width:374.85pt;border-collapse:collapse'><tr><td width=37 valign=top style='width:27.6pt;border:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal><b><span lang=DE style='font-size:8.0pt'>CRS</span></b><o:p></o:p></p></td><td width=309 valign=top style='width:231.6pt;border:solid windowtext 1.0pt;border-left:none;padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal><b><span lang=DE style='font-size:8.0pt'>PROJ STRING </span></b><o:p></o:p></p></td><td width=154 valign=top style='width:115.65pt;border:solid windowtext 1.0pt;border-left:none;padding:0in 0in 0in 0in'><p class=MsoNormal><b><span lang=DE style='font-size:8.0pt'>Datim transformation EPSG code</span></b><o:p></o:p></p></td></tr><tr><td width=37 valign=top style='width:27.6pt;border:solid windowtext 1.0pt;border-top:none;padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal><span lang=DE style='font-size:8.0pt'>EPSG 6204</span><o:p></o:p></p></td><td width=309 valign=top style='width:231.6pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Courier New \,serif"'>+proj=tmerc +lat_0=0 +lon_0=21 +k=0.9999 +x_0=500000 +y_0=0 +ellps=bessel +towgs84=521.748,229.489,590.921,4.029,4.488,-15.521,-9.78 +units=m +no_defs</span><o:p></o:p></p></td><td width=154 valign=top style='width:115.65pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 0in 0in 0in'><p class=MsoNormal align=center style='text-align:center'><span style='font-size:8.0pt;font-family:"Courier New \,serif"'> </span><o:p></o:p></p><p class=MsoNormal align=center style='text-align:center'><span lang=DE style='font-size:8.0pt;font-family:"Courier New \,serif"'>6206</span><o:p></o:p></p></td></tr><tr><td width=37 valign=top style='width:27.6pt;border:solid windowtext 1.0pt;border-top:none;padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal><span lang=DE style='font-size:8.0pt'>EPSG </span><o:p></o:p></p><p class=MsoNormal><span lang=DE style='font-size:8.0pt'>6316</span><o:p></o:p></p></td><td width=309 valign=top style='width:231.6pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Courier New \,serif"'>+proj=tmerc +lat_0=0 +lon_0=21 +k=0.9999 +x_0=7500000 +y_0=0 +ellps=bessel +towgs84=521.748,229.489,590.921,4.029,4.488,-15.521,-9.78 +units=m +no_defs</span><o:p></o:p></p></td><td width=154 valign=top style='width:115.65pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 0in 0in 0in'><p class=MsoNormal align=center style='text-align:center'><span style='font-size:8.0pt;font-family:"Courier New \,serif"'> </span><o:p></o:p></p><p class=MsoNormal align=center style='text-align:center'><span lang=DE style='font-size:8.0pt;font-family:"Courier New \,serif"'>6206</span><o:p></o:p></p></td></tr><tr><td width=37 valign=top style='width:27.6pt;border:solid windowtext 1.0pt;border-top:none;padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal><span lang=DE style='font-size:8.0pt'>EPSG </span><o:p></o:p></p><p class=MsoNormal><span lang=DE style='font-size:8.0pt'>9945</span><o:p></o:p></p></td><td width=309 valign=top style='width:231.6pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Courier New \,serif"'>+proj=tmerc +lat_0=0 +lon_0=21 +k=0.9999 +x_0=500000 +y_0=-4000000 +ellps=bessel +towgs84=521.748,229.489,590.921,4.029,4.488,-15.521,-9.78 +units=m +no_defs</span><o:p></o:p></p></td><td width=154 valign=top style='width:115.65pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 0in 0in 0in'><p class=MsoNormal align=center style='text-align:center'><span style='font-size:8.0pt;font-family:"Courier New \,serif"'> </span><o:p></o:p></p><p class=MsoNormal align=center style='text-align:center'><span lang=DE style='font-size:8.0pt;font-family:"Courier New \,serif"'>6206</span><o:p></o:p></p></td></tr></table><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>This initiative I started with paper that have been published and presented in ICA conference 2021 <a href="https://www.proc-int-cartogr-assoc.net/4/45/2021">https://www.proc-int-cartogr-assoc.net/4/45/2021</a> <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>To be more clear, my intention is to make simple and easier usage of CRS’s by users in North Macedonia in a case when they overlap official data with data coming from other sources based on WGS84 datum. <o:p></o:p></p><p class=MsoNormal>As example I will mention QGIS software, which use default datum transformation parameters, and in parallel offers “ask” option if several datum transformations are available. Second option can be used by geodetic professionals, however most of GIS users are not able to use this option and they have troubles in overlapping their data in state CRS with global data such openstreetmap, google map, etc. <o:p></o:p></p><p class=MsoNormal>Therefore I started this initiative to solve this problem step by step. First was creating all EPSG codes for three type of spatial data which was finished in March 18<sup>th</sup>, and second is this/todays request to you for defining in PROJ the EPSG 6206 as default datum transformation for three CRS’s (6204, 6316 and 9945), which will enable their usage by all GIS software users without deep knowledge in coordinate systems. <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>Maybe my explanation was not precise in above text, therefore I will try to give some additional details on this issue. I order to be more clear I will explain with concrete example by QGIS software: <o:p></o:p></p><ol style='margin-top:0in' start=1 type=1><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo3'>In current version of EPSG 6316, in a case of usage in QGIS with non-checked “ask option if several datum transformations are available”, software doesn’t ask user for selecting of appropriate transformation, and use bellow values as default transformation: <span style='background:yellow;mso-highlight:yellow'>+proj=tmerc +lat_0=0 +lon_0=21 +k=0.9999 +x_0=7500000 +y_0=0 +ellps=bessel <span style='color:red'>+towgs84=682,-203,480,0,0,0,0 </span>+units=m +no_defs</span><o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo3'>More than 90% of users (except geodetic professionals) don’t know what is datum transformation, and they uncheck the “ask option if several datum transformations are available” option (from setting/options/CRS/transformations), or never use if this box is unchecked by installation. <o:p></o:p></li><ol style='margin-top:0in' start=1 type=1><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level2 lfo3'>In this case, QGIS software users in our country works with totally wrong datum transformation, which results with large difference between data in 6316 with global data developed in WGS84. <o:p></o:p></li></ol><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo3'>In order to avoid such problems, my request is to change those “default” datum transformation parameters (<span style='color:red;background:yellow;mso-highlight:yellow'>+towgs84=682,-203,480,0,0,0,0</span>) in a case when the box “ask option if several datum transformations are available” is unchecked, with the transformation parameters defined in 6202 <span style='background:yellow;mso-highlight:yellow'>(+proj=tmerc +lat_0=0 +lon_0=21 +k=0.9999 +x_0=7500000 +y_0=0 +ellps=bessel <b><span style='color:red'>+towgs84=521.748,229.489,590.921,4.029,4.488,-15.521,-9.78</span></b> +units=m +no_defs</span>). <o:p></o:p></li><ol style='margin-top:0in' start=1 type=1><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level2 lfo3'>Maybe “default datum transformation” is not appropriate term. Now I hope that my request is more clear. <o:p></o:p></li></ol><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo3'>I am aware that QGIS will continue to propose all candidate operations reported by PROJ in a case when CRS intersects with several areas in a case when box “ask option if several datum transformations are available” is checked. This is correct and it very important for geodetic experts, that are able to use appropriate transformation in a case of several transformation parameters are available. <o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo3'><b><u>Main objective of my request is only in a case when user don’t check/use the box “ask option if several datum transformations are available” and software work with default transformation parameters. </u></b><o:p></o:p></li><ol style='margin-top:0in' start=1 type=1><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level2 lfo3'><b><u>In this case, as datum transformation to WGS84 for three CRS’s (EPSG 6316, EPSG 6204, and EPSG 9945) to be set EPSG 6206 as primary/default datum transformation from MGI 1901 to WGS84 (see table in my previous email). </u></b><o:p></o:p></li></ol></ol><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>If the request is not clear, please don’t hesitate to ask me for every detail, as well as I am able to schedule online meeting with you. <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>Sincerely yours, <o:p></o:p></p><p class=MsoNormal>Bashkim Idrizi. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal><span style='font-size:6.0pt;font-family:"Arial",sans-serif;color:black'>==================================================<o:p></o:p></span></p><p class=MsoNormal><b><span style='font-size:8.0pt;font-family:"Arial",sans-serif;color:#0000BF'><a href="https://bashkim-idrizi.blogspot.com/"><span style='color:blue'>Prof.Dr. Bashkim IDRIZI</span></a></span></b><span style='font-size:8.0pt;font-family:"Arial",sans-serif;color:black'><o:p></o:p></span></p><p class=MsoNormal><b><span style='font-size:6.0pt;font-family:"Arial",sans-serif;color:#0000BF'>----------------------------------------------------------------------------------</span></b><span style='font-size:6.0pt;font-family:"Arial",sans-serif;color:black'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:6.0pt;font-family:"Arial",sans-serif;color:#0000BF'><a href="http://www.uni-pr.edu/" target="_blank"><span style='color:blue'>University of Prishtina</span></a><i>, Cartography & GIS lecturer</i> </span><span style='font-size:6.0pt;font-family:"Arial",sans-serif;color:black'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:6.0pt;font-family:"Arial",sans-serif;color:black'><a href="http://www.unt.edu.mk/" target="_blank"><span style='color:blue'>University "Mother Teresa" Skopje</span></a></span><i><span style='font-size:6.0pt;font-family:"Arial",sans-serif;color:#0000BF'>, Cartography lecturer </span></i><span style='font-size:6.0pt;font-family:"Arial",sans-serif;color:black'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:6.0pt;font-family:"Arial",sans-serif;color:#0000BF'><a href="http://www.geo-see.org/" target="_blank"><span style='color:blue'>Geo-SEE Institute</span></a><i>, President </i> </span><span style='font-size:6.0pt;font-family:"Arial",sans-serif;color:black'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:6.0pt;font-family:"Arial",sans-serif;color:black'><a href="http://www.unite.edu.mk/" target="_blank"><span style='color:blue'>State University of Tetova</span></a></span><i><span style='font-size:6.0pt;font-family:"Arial",sans-serif;color:#0000BF'>, Past cartography & GIS lecturer </span></i><span style='font-size:6.0pt;font-family:"Arial",sans-serif;color:black'><o:p></o:p></span></p><p class=MsoNormal><u><span style='font-size:6.0pt;font-family:"Arial",sans-serif;color:#0000BF'><a href="http://www.karl-gega.org/" target="_blank"><span style='color:blue'>Karl Gega Association,</span></a></span></u><i><span style='font-size:6.0pt;font-family:"Arial",sans-serif;color:#0000BF'> Past President </span></i><span style='font-size:6.0pt;font-family:"Arial",sans-serif;color:#0000BF'> </span><span style='font-size:6.0pt;font-family:"Arial",sans-serif;color:black'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:6.0pt;font-family:"Arial",sans-serif;color:#0000BF'>adress: str. Djon Kenedi, 25/4-20; 1010 Skopje, North Macedonia. </span><span style='font-size:6.0pt;font-family:"Times New Roman",serif;color:black'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:6.0pt;font-family:"Arial",sans-serif;color:#0000BF'>gsm-mk: + 389 /75/ 712-998 (Viber & WhatsApp)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:6.0pt;font-family:"Arial",sans-serif;color:#0000BF'>gsm-ks: + 383 /45/ 341-098 </span><span style='font-size:6.0pt;font-family:"Arial",sans-serif;color:black'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:6.0pt;font-family:"Arial",sans-serif;color:#0000BF'>skype: bashkim.idrizi (<a href="mailto:bashkim.idrizi@yahoo.com">bashkim.idrizi@yahoo.com</a>)</span><span style='font-size:6.0pt;font-family:"Arial",sans-serif;color:black'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:6.0pt;font-family:"Arial",sans-serif;color:black'>==================================================</span><span style='font-size:6.0pt'><o:p></o:p></span></p></div></div></body></html>