EGM2008 FILE FREE DOWNLOAD

EGM2008 FILE FREE DOWNLOAD

You need the following file: Hydrographic Survey Software Download free demo version. In the “Selection” section, you can select the area which you want to export. With this four values, a height offset is calculated using Bi-cubic interpolation. After starting the utility, the following screen should appear:. To solve this issue, Hydromagic is shipped with an utility called ‘EGMUtil’ which allows you to extract a specified region from the EGM data file, and convert it to an Hydromagic geoid file.

egm2008 file

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To solve this issue, Hydromagic is shipped with an utility called ‘EGMUtil’ which allows you to extract a specified region from the EGM data file, and convert it to an Hydromagic geoid file.

After starting the utility, the following screen should appear: When ready, click the “Start” button to generate the geoid file. It can also be found in the ‘Program’ folder in the installation directory.

egm2008 file

Because the data file containing all grid values is very large it contains about million data pointsit would cause Hydromagic to consume 1 Gigabyte of additional memory. To specify either a coordinate on the southern or western hemisphere, use the ‘-‘ minus sign.

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egm2008 file

Please note that the utility only works when using the 1×1 minute data file. You need the following file: This file name might change sometimes, but it is important that you use the 1×1 minute, small endian, WGS84 variant. Output Specify the file name of the Hydromagic ifle file here.

To calculate the height offset, the four points nearest to the current position are retrieved from the geoid file.

You need the following file:. The last step is adding the geoid model in Hydromagic. The utility will check the file and return an error when the incorrect file is used. Hydrographic Survey Software Download free demo version.

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efm2008 At this moment the file can be downloaded using this link to the NGA website. Generating the geoid file When ready, click the “Start” button to generate the geoid file.

To do so, please refer to the Manage Geoids” chapter in the manual. The file written will have the same format as geoid files download directly from the Eye4Software website.

Hydrographic Survey Software

Copyright c Eye4Software B. By default, this folder will be displayed in the “Save As Please remember the file name used for this part of the EGM grid, you need it when importing it into Hydromagic.

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In the “Selection” section, you can select the area which you want to export. The EGM model has a cell size of 1. Please note that the maximum area size is 2×2 degrees equal to data points. After starting the utility, the following screen should appear:.

The software will warn you in case the selected area is too big. Specify the file name of the Hydromagic geoid file here. Selection In the “Selection” section, you can select the area which you want to export. When this process has been completed, you can close the utility using the “Close” button. With this four values, a height offset is calculated using Bi-cubic interpolation.

Input Use the input section to specify the input data file as downloaded from the NGA website. The EGM utility can be started vile the Windows start menu. Use the input section to specify the input data file as downloaded from the NGA website.