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| bio | website | |
|---|---|---|
| location | Redlands, CA | |
| age | ||
| visits | member for | 2 years, 7 months |
| seen | 53 mins ago | |
| stats | profile views | 306 |
I've been working with map projections and datum transformations for years, including in ArcView GIS, ArcInfo 7 and up, MapObjects, and ArcGIS.
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18h |
awarded | Quorum |
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23h |
reviewed | No Action Needed ArcGIS Heads up digitizing - Rooms and doors |
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1d |
comment |
Tile script (Mapnik) with OpenLayers - Problem with projection (900913) Now that Mintx has pointed the coordinate value problem out (I can see it now!), the 2*20million value in def _unitsPerPixel(zoomLevel) also has one too many zeroes. |
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2d |
comment |
Some terms related to coordinate Yes, that's correct. |
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May 17 |
revised |
Some terms related to coordinate Changed some terminology |
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May 17 |
answered | Some terms related to coordinate |
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May 17 |
comment |
Reprojection problem with gdalwarp I haven't worked with tilted perspective so I don't have a good mathematical feel for it. Based on Snyder's version though, I would try moving the center point in or near the raster's extents. |
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May 12 |
comment |
Which CRS to use for Google Maps? @rashad, 900913 is authority OpenLayers. EPSG's version is 3857. |
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May 12 |
answered | Wrong object size after projecting spatial data from one coordinate system to another |
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May 3 |
answered | Does ArcGIS 10.1 have a auto-backup feature? |
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May 2 |
comment |
Calculating points in the USDA's Cropland Data Layer coordinate system @whuber Bill, you referred to spatialreference.org which <> EPSG. SR's IDs aren't EPSG's or Esri's. The EPSG entry is probably 5070, NAD83 / Conus Albers. Link to a report: epsg-registry.org/… |
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May 1 |
awarded | Custodian |
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May 1 |
reviewed | Approve suggested edit on How to install Openlayers plugin on Qgis 1.8? |
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Apr 30 |
reviewed | Leave Open How to embed a PDF into an Excel spreadsheet? |
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Apr 30 |
comment |
ArcObjects 10/10.1 Get rid of Invalid layer symbol in TOC What about ESRI.ArcGIS.ArcMapUI.IContentsView::Refresh(null)? |
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Apr 30 |
comment |
define a datum and meridian in a CRS in QGIS For this case, look at the 2D geographic CRS. For East Africa, probably Arc 1950 or Arc 1960. Neither use Clarke 1866! |
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Apr 30 |
comment |
define a datum and meridian in a CRS in QGIS @XNSTT, that should be the default. Only if the prime meridian was not zero, would you need to set it. |
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Apr 29 |
answered | define a datum and meridian in a CRS in QGIS |
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Apr 29 |
comment |
define a datum and meridian in a CRS in QGIS Esri does incorporate datum (and geographic CRS) information into shapefile prj definitions IF it's provided. I think you mean we handle geographic/datum transformations separately. A "datum" does not inherently include a particular transformation. |
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Apr 26 |
comment |
ArcToolbox Metadata. How does this work? Also posted on ArcGIS forums: forums.arcgis.com/threads/… |
