Questions tagged [bathymetry]
Bathymetry is the study of underwater depths
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Incorrect vertical extent in raster added to ArcGIS Pro
I'm working with some bathymetry data (dataset: https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/150050).
I viewed this dataset on an online data portal which shows bathymetry data ...
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What does circle with checkered quadrants or crosshairs in middle of bathymetry map indicate?
The bathymetry map below has a symbol in the middle of the map that is a circle with quadrants and dots in it.
What does that symbol mean?
Likewise, I've seen similar symbols in other bathymetry maps ...
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UK DEFRA .ASC files in QGIS
I'm trying to add UK DEFRA Bathymetry files in '.asc' format. There does not seem to be any information on the CRS and when I load it the area appears in faraway part of the World with the co-...
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Importing gzipped CSV files in QGIS
I often receive bathymetry data in a gzipped delimited text file (xyz) and want to open it directly in qgis without extracting it first. Is that possible? According to QGIS 2.18 user manual it seems ...
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Raster package terrain() function retrieves NaN in R
This is my R code:
#remotes::install_github("EMODnet/EMODnetWCS")
library(EMODnetWCS)
wcs <- emdn_init_wcs_client(service = "bathymetry")
x <- rast(ext=c(-15, -13, 36, 38), ...
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QGIS only show hillshade for NOAA bathymetry, not land terrain
In QGIS, I have NOAA hillshade for the South African coastline. I want to keep only the hillshade for the ocean. However the NOAA hillshade also includes the land terrain, which is low resolution and ...
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Creating a bathymetric map in QGIS 3.34 using GRASS v.surf.idw
I am brand new to QGIS and GIS in general. I am attempting to create a bathymetric map using data I collected myself. I am trying to use this tutorial: https://www.youtube.com/watch?v=dGDr3BrmmNw
The ...
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Bathymetry rasters
I have 2 bathymetry rasters of same shape but different min/max values.I need to create a new ratser of same shape that show depth difference between these 2.
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How do you load a .1x1 (bathymetry) file in QGIS?
I have received bathymetry data in a .1x1 format, which appears to be a challenge to load directly into QGIS. The raw file is structured as a CSV with four columns, containing coordinates, depth, and ...
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Extracting picture of certain elevation from ETOPO .tiff file
I started learning QGIS a week ago to do an alt-geo map and .tiff files from what I have read contain several image files displayed as 1.
Is there a way for me to export specifically the PNG that ...
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How to clean dangling ends from bathymetric lines so they can be polygonized? [duplicate]
Problem
I want to turn bathymetric lines into polygons. However, the bathymetric line datasets have multiple dangling ends within them. Because of this, the 'Lines to polygons' or 'Polygonize' tools ...
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3-D view of .ovr bathymetry raster in ArcGIS Pro
I am working with .ovr format a bathymetry data in ArcGIS Pro. The dataset has the following 4 files (name.asc, name.asc.aux.xml, name.asc.ovr, and name.prj) When I add click "add data" to ...
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Bathymetry from Satellite Imagery Using Google Earth Engine
I have developed a GEE script that processes Sentinel2 imagery to derive water depths by training against an input of real measurements. The results show a broad scattering of random pixel 'depths' ...
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Upload shp, dbf, prj and shx [duplicate]
I have four files from a download of a bathymetry map and sea depth lines. I want to upload the four files to QGIS because I understand that each file has different information, but I can only load ...
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Stepping artifacts - Merging raster data in ArcGIS Pro
I am working with a large number of raster datasets within multiple geodatabases in ArcGIS Pro. The original source data are imported from ASC format converted from UTM29N to WGS84 (Bilinear ...
