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South American projection
Specifying PROJ.4 projection with North pointing down?Distances in Plate Carrée projection - EPSG:4326 - WGS84Arctic EPSG:4326 map projection?CartoDB Custom Projection FailsWrong area using Albers Equal Area Projection in GRASS for Java, IndonesiaCorrect Projection for calculating centroids of a group of points?Which projection is more suitable?Converting raster from WGS_1984_plate_carree to WGS_1984 in ArcGIS Desktop?Which one is the correct Plate Carrée projection in QGIS?Reprojecting MODIS netCDFs in ArcMap (Level 3 Standard Mapped Images)
I am working on a map of South America (from the top of Chile down to Cape Horn) and need to include distance buffers on my map but I am getting confused by which projection to use to get the distance right? Would Plate Carree work or is there a better one for the area?
arcgis-desktop coordinate-system south-america
edited Apr 1 at 16:09
Vince
14.8k32849
asked Apr 1 at 15:59
MurkwoodMurkwood
161
add a comment |
I am working on a map of South America (from the top of Chile down to Cape Horn) and need to include distance buffers on my map but I am getting confused by which projection to use to get the distance right? Would Plate Carree work or is there a better one for the area?
arcgis-desktop coordinate-system south-america
edited Apr 1 at 16:09
Vince
14.8k32849
asked Apr 1 at 15:59
MurkwoodMurkwood
161
Is the area of use Chile only, or everything south of approximately 18S?
– mkennedy
2 days ago
Everything south of 18S
– Murkwood
2 days ago
add a comment |
I am working on a map of South America (from the top of Chile down to Cape Horn) and need to include distance buffers on my map but I am getting confused by which projection to use to get the distance right? Would Plate Carree work or is there a better one for the area?
arcgis-desktop coordinate-system south-america
edited Apr 1 at 16:09
Vince
14.8k32849
asked Apr 1 at 15:59
MurkwoodMurkwood
161
I am working on a map of South America (from the top of Chile down to Cape Horn) and need to include distance buffers on my map but I am getting confused by which projection to use to get the distance right? Would Plate Carree work or is there a better one for the area?
arcgis-desktop coordinate-system south-america
arcgis-desktop coordinate-system south-america
edited Apr 1 at 16:09
Vince
14.8k32849
asked Apr 1 at 15:59
MurkwoodMurkwood
161
edited Apr 1 at 16:09
Vince
14.8k32849
asked Apr 1 at 15:59
MurkwoodMurkwood
161
edited Apr 1 at 16:09
Vince
14.8k32849
edited Apr 1 at 16:09
Vince
14.8k32849
edited Apr 1 at 16:09
Vince
14.8k32849
14.8k32849
asked Apr 1 at 15:59
MurkwoodMurkwood
161
asked Apr 1 at 15:59
MurkwoodMurkwood
161
asked Apr 1 at 15:59
MurkwoodMurkwood
161
161
Is the area of use Chile only, or everything south of approximately 18S?
– mkennedy
2 days ago
Everything south of 18S
– Murkwood
2 days ago
add a comment |
Is the area of use Chile only, or everything south of approximately 18S?
– mkennedy
2 days ago
Everything south of 18S
– Murkwood
2 days ago
Is the area of use Chile only, or everything south of approximately 18S?
– mkennedy
2 days ago
Is the area of use Chile only, or everything south of approximately 18S?
– mkennedy
2 days ago
Everything south of 18S
– Murkwood
2 days ago
Everything south of 18S
– Murkwood
2 days ago
add a comment |
2 Answers
2
active
oldest
votes
Try the projected coordinate system Peru96_UTM_Zone_17S. If that doesn't appear accurate try Peru96_UTM_Zone_18S and Peru96_UTM_Zone_19S. I hope this helps.
answered Apr 1 at 16:26
Josh TaylorJosh Taylor
1
New contributor
Josh Taylor is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Peru is north of Chile so I don't think ProjCRS based on Peru96 are appropriate.
– mkennedy
2 days ago
add a comment |
No projection is natively going to give you the correct distances unless you are measuring very particular lines, like from the center of a azimuthal equidistant projection.
If the area of interest is relatively small, a projected coordinate reference system (CRS) that's conformal (maintains local angles/shapes) or equal area may give 'good enough' results.
Some software tools or workflows may have the capability to return geodesic-based distances instead. Geodesic distances are based on the surface of the ellipsoid so still not 100% correct relative to the topography, but often good enough versus 2D Cartesian distances based on a projected CRS.
For half of South America, you could make a custom equidistant cylindrical projection. That would have accurate north-south distances and the distances along the standard parallels would be accurate. Use SIRGAS for the geographic CRS.
answered yesterday
mkennedymkennedy
15.8k13156
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
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active
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votes
Try the projected coordinate system Peru96_UTM_Zone_17S. If that doesn't appear accurate try Peru96_UTM_Zone_18S and Peru96_UTM_Zone_19S. I hope this helps.
answered Apr 1 at 16:26
Josh TaylorJosh Taylor
1
New contributor
Josh Taylor is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Peru is north of Chile so I don't think ProjCRS based on Peru96 are appropriate.
– mkennedy
2 days ago
add a comment |
Try the projected coordinate system Peru96_UTM_Zone_17S. If that doesn't appear accurate try Peru96_UTM_Zone_18S and Peru96_UTM_Zone_19S. I hope this helps.
answered Apr 1 at 16:26
Josh TaylorJosh Taylor
1
New contributor
Josh Taylor is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Peru is north of Chile so I don't think ProjCRS based on Peru96 are appropriate.
– mkennedy
2 days ago
add a comment |
Try the projected coordinate system Peru96_UTM_Zone_17S. If that doesn't appear accurate try Peru96_UTM_Zone_18S and Peru96_UTM_Zone_19S. I hope this helps.
answered Apr 1 at 16:26
Josh TaylorJosh Taylor
1
New contributor
Josh Taylor is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Try the projected coordinate system Peru96_UTM_Zone_17S. If that doesn't appear accurate try Peru96_UTM_Zone_18S and Peru96_UTM_Zone_19S. I hope this helps.
answered Apr 1 at 16:26
Josh TaylorJosh Taylor
1
New contributor
Josh Taylor is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered Apr 1 at 16:26
Josh TaylorJosh Taylor
1
New contributor
Josh Taylor is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered Apr 1 at 16:26
Josh TaylorJosh Taylor
1
answered Apr 1 at 16:26
Josh TaylorJosh Taylor
1
1
New contributor
Josh Taylor is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Josh Taylor is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Josh Taylor is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Peru is north of Chile so I don't think ProjCRS based on Peru96 are appropriate.
– mkennedy
2 days ago
add a comment |
Peru is north of Chile so I don't think ProjCRS based on Peru96 are appropriate.
– mkennedy
2 days ago
Peru is north of Chile so I don't think ProjCRS based on Peru96 are appropriate.
– mkennedy
2 days ago
Peru is north of Chile so I don't think ProjCRS based on Peru96 are appropriate.
– mkennedy
2 days ago
add a comment |
No projection is natively going to give you the correct distances unless you are measuring very particular lines, like from the center of a azimuthal equidistant projection.
If the area of interest is relatively small, a projected coordinate reference system (CRS) that's conformal (maintains local angles/shapes) or equal area may give 'good enough' results.
Some software tools or workflows may have the capability to return geodesic-based distances instead. Geodesic distances are based on the surface of the ellipsoid so still not 100% correct relative to the topography, but often good enough versus 2D Cartesian distances based on a projected CRS.
For half of South America, you could make a custom equidistant cylindrical projection. That would have accurate north-south distances and the distances along the standard parallels would be accurate. Use SIRGAS for the geographic CRS.
answered yesterday
mkennedymkennedy
15.8k13156
add a comment |
No projection is natively going to give you the correct distances unless you are measuring very particular lines, like from the center of a azimuthal equidistant projection.
If the area of interest is relatively small, a projected coordinate reference system (CRS) that's conformal (maintains local angles/shapes) or equal area may give 'good enough' results.
Some software tools or workflows may have the capability to return geodesic-based distances instead. Geodesic distances are based on the surface of the ellipsoid so still not 100% correct relative to the topography, but often good enough versus 2D Cartesian distances based on a projected CRS.
For half of South America, you could make a custom equidistant cylindrical projection. That would have accurate north-south distances and the distances along the standard parallels would be accurate. Use SIRGAS for the geographic CRS.
answered yesterday
mkennedymkennedy
15.8k13156
add a comment |
No projection is natively going to give you the correct distances unless you are measuring very particular lines, like from the center of a azimuthal equidistant projection.
If the area of interest is relatively small, a projected coordinate reference system (CRS) that's conformal (maintains local angles/shapes) or equal area may give 'good enough' results.
Some software tools or workflows may have the capability to return geodesic-based distances instead. Geodesic distances are based on the surface of the ellipsoid so still not 100% correct relative to the topography, but often good enough versus 2D Cartesian distances based on a projected CRS.
For half of South America, you could make a custom equidistant cylindrical projection. That would have accurate north-south distances and the distances along the standard parallels would be accurate. Use SIRGAS for the geographic CRS.
answered yesterday
mkennedymkennedy
15.8k13156
No projection is natively going to give you the correct distances unless you are measuring very particular lines, like from the center of a azimuthal equidistant projection.
If the area of interest is relatively small, a projected coordinate reference system (CRS) that's conformal (maintains local angles/shapes) or equal area may give 'good enough' results.
Some software tools or workflows may have the capability to return geodesic-based distances instead. Geodesic distances are based on the surface of the ellipsoid so still not 100% correct relative to the topography, but often good enough versus 2D Cartesian distances based on a projected CRS.
For half of South America, you could make a custom equidistant cylindrical projection. That would have accurate north-south distances and the distances along the standard parallels would be accurate. Use SIRGAS for the geographic CRS.
answered yesterday
mkennedymkennedy
15.8k13156
answered yesterday
mkennedymkennedy
15.8k13156
answered yesterday
mkennedymkennedy
15.8k13156
answered yesterday
mkennedymkennedy
15.8k13156
15.8k13156
add a comment |
add a comment |
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Is the area of use Chile only, or everything south of approximately 18S?
– mkennedy
2 days ago
Everything south of 18S
– Murkwood
2 days ago