topic Re: clipping a bathymetric map in ArcGIS... in ArcGIS Maritime Questions

clipping a bathymetric map in ArcGIS...

BobGriest — Sat, 16 Dec 2023 07:39:32 GMT

Since ArcGIS does not possess the ability to clip or crop, would somebody be so kind as to recommend another site that has these capabilities? Thank you.

Re: clipping a bathymetric map in ArcGIS...

PaulinaKarkauskaite — Mon, 18 Dec 2023 09:22:47 GMT

Hello @BobGriest,

Can you elaborate on the format of your "bathymetric map"? Do you have data in a BIS or is it a raster dataset?

ArcGIS offers multiple ways of clipping your data:

The Extract by Mask tool allows you to extract the cells of a raster that correspond to the areas defined by a mask. The mask can be a polygon feature or another raster.
The Clip Raster tool allows you to cut out a portion of a raster dataset, mosaic dataset, or image service layer.
The Export raster pane provides capabilities such as clipping via the current map extent or clipping via a selected graphic.

If you are interested in visually clipping your map for the purpose of exporting to a PDF or other formats, you can do it in following ways:

Clip layers in a map - allows you specify either a rectangular extent or a shape derived from features or graphics, and display your map within that extent or shape.
In the Layout view, you can reshape a map frame to a desired shape.

Paulina

Re: clipping a bathymetric map in ArcGIS...

BobGriest — Tue, 19 Dec 2023 08:18:49 GMT

Hi Paulina, I am very challenged with computers so please accept my apologies as we begin. I have an Esri map saved in ArcGIS which I hope to clip and then send that portion of the map to Homeport. The clipped portion must include the ability to zoom in and out, and self adjust the clarity at all levels of zoom. Here is the address of the Esri map; https://www.arcgis.com/home/webmap/viewer.html?webmap=a9cf44157a9444cc9d24516e403e692c. To answer your questions concerning if I can elaborate on the format of my "bathymetric map" and if I have data in a BIS or in a raster dataset the answer is...I do not know how to find that information. However, I was able to find that Homeport uses .adm and .gpx as file formats.

Thank you for your help, Bob Griest

Re: clipping a bathymetric map in ArcGIS...

PaulinaKarkauskaite — Tue, 19 Dec 2023 12:09:52 GMT

@BobGriest Unfortunately, I can't access your web map, it's probably not shared with everyone.

Does the map contain layers that you have published from ArcGIS Pro or did you find these layers by searching ArcGIS Online?

Paulina

Re: clipping a bathymetric map in ArcGIS...

BobGriest — Tue, 19 Dec 2023 21:36:57 GMT

Here is the address of the map. The part I need is inside of the yellow outline. I searched and changed the settings so anyone can now view the map. https://www.arcgis.com/home/webmap/viewer.html?webmap=a9cf44157a9444cc9d24516e403e692c. All layers, etc. should appear along the left of the map image. I hope this helps. Thank you again, Bob

Re: clipping a bathymetric map in ArcGIS...

PaulinaKarkauskaite — Thu, 21 Dec 2023 10:52:00 GMT

@BobGriest ,

I couldn't access your map via the URL you provided, but I noticed one of your other posts where you shared another link that I could access:

https://www.arcgis.com/home/webmap/viewer.html?webmap=dedbb07788384cc19990433a2fd394f9

If that is the map that you are working on, I can see that you are using data that is published by NOAA. The bathymetry data in your map is coming from an image service which contains raster data.

ArcGIS Online Analysis capabilities include raster data management tools. To use tools such as Extract Raster you need to have a ArcGIS Image for ArcGIS Online license. If I understand you correctly, you want to export the data to use in your 3rd party application HomePort. Unfortunately, I don't have enough knowledge about this application to help you with loading data into it. Additionally, it looks like this application is discontinued?

To export the bathymetry data from the image service, you can try to use the Export capability with the REST API: https://gis.ngdc.noaa.gov/arcgis/rest/services/bag_bathymetry/ImageServer/exportImage . Below is an example of how you can export the data to multiple image formats:

With the parameters above I have exported a tiff image that covers your area:

You mentioned the .gpx and .adm file formats, which are normally used for data such as routes, tracks, and waypoints. Again, I'm not familiar with the HomePort application, but I don't think you can use bathymetry data with these formats. If you want to create routes, tracks, and waypoints in the .gpx format, you can use the Features To GPX tool in ArcGIS Pro.

Paulina

Re: clipping a bathymetric map in ArcGIS...

BobGriest — Sun, 31 Dec 2023 23:11:10 GMT

Paulina, thank you very much for your help, Bob