Jul 9, 2019 · I cannot find anywhere why BLH (where B is geographical latitude, L geographical longitude and H is elliposidal height) is called BLH. The origin of the letter H is clear, but what about …

Oct 2, 2023 · I am trying to understand conversion from geodetic coordinates to ENU coordinates. As per this wikipedia page, its two step process: geodetic to ECEF coordinates and then ECEF …

@MaryBeth I'm writing the conversion as a function in Java. I've researched a few different methods for converting ECEF to Geodetic (e.g. Zhu referenced by wikipedia), but this one is most easily …

Dec 6, 2019 · Thank you Ian. I use Firefox on Ubuntu and here I usually get XML files with tags. But because of your note, I have opened the file in Chrome. Here I see the tags. But also a message at …

Jan 12, 2019 · I have a local ENU coordinate system on the surface of the Earth (similar to this question: GPS coordinates to XYZ on relative grid). I know the lat,lon,alt of the local ENU origin, and thus I can ...

A different definition is found in [Li et al., DIGITAL TERRAIN MODELING - Principles and Methodology]: DEM is a subset of DTM and the most fundamental component of DTM. In practice, these terms …

Apr 5, 2016 · I need to calculate the least cost path for a water pipe. The layers I have now are land use, slope, soil type and protected natural parks. Now my teacher has given me the prices of building a …

For coordinates captured using a GPS, or by any means, longitude is the X value and latitude is the Y value. These are for a geographic coordinate system and have units of degrees. Alternatively your …

Jul 9, 2024 · I want to add a new field to my feature attribute table. In this field, I want to generate a random ID (just a number, like 1, 2, 3, etc.) for every new and existing point I create on the map. This...

Jul 27, 2023 · I'm currently working on comparing raster maps between years to detect landscape change between them. One issue is that at one point the resolution changed from 25x25 meters to …