12/8/2022 0 Comments Idp.generic gnu octave![]() ![]() ![]() ![]() Because the total amount of profiles overstepped 100 (62 and 52 for the northern and southern trench segments), only selected profiles were visualized. The table was then restructured, sorted and reshaped by the AWK script. Therefore, the tables were exported to AWK, a data-driven programming language and a powerful tool for data extraction. These tables were generated by the GMT in its native format and could not be directly processed by the MATLAB/Octave. Besides visualized map, the processed geodata were received in a numerical form as a complex multi-field table for each segment. The GMT was used for cartographic mapping based on the raster ETOPO1 grid and automatic digitizing of the profiles crossing the trench perpendicularly. The initial mapping and geospatial analysis was performed in GMT scripting toolset. Practical research aim is to analyse and compare bathymetry in the southern and northern part of the trench using digitized cross-section profiles. The geographic scope of the research is focused on the Kuril-Kamchatka Trench, north Pacific Ocean. Abstract : The paper presents a sequential use of the AWK and GNU Octave programming languages integrated with Generic Mapping Tools (GMT) for geospatial data analysis. ![]()
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