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Stream Delineation w classifications
Can anyone offer any advise on how to classify flowlines into perennial, intermittent and ephemeral? I have created flowline using the hydrology toolset in ArcGIS Pro using 1/3 arc sec DEMs.
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AUV/MBES/SSS/SBP processing
ArcGIS Proor Arcmap Hi everybody, I would like to ask if AUV (autonomous underwater vehicle) data can be processed with ArcGIS Pro or ArcMap, the data contains XYZ (MBES-multibeam, SBP-sub bottom profiler and SSS sidescan sonar). for hydro survey, did somebody experince with this kind of thing? Thank you for your time.
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Big Data Management with Arcmap desktop, best ways to handle huge files
Sometimes I am getting text files that contain only XYZ (easting, northing, and height) with 10-15GB size (points or polylines). If I need to interpolate that file or create fishnet, adjust Z value of data or etc. in ArcMap it stops or taking forever. My comp specs I7,32GB RAM, working on SSD, GeForce GTX 1080, 4.20GHZ.…
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Basins at ArcGIS
Hello, I would like to express a question about the Basin tool, from the Hydrology of Spatial Analyst tools. I use the Flow Direction raster in order to create the Basins of an area. I can' t understad what the values of the raster that is created with the tool basin represent. The values that i get are 1 (the lowest) to…
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Distortion in the 'Basin' GP Tool raster output
I was trying out the procedure to delineate watershed using series of geoprocessing tools in ArcMap 10.5.1. Everything seems to go exceedingly well that I was a little afraid of the degree of hitch that will pop up. Et voila! This (please refer to the screenshot attached below). I tried generating a raster delineating all…
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what are the main difference between ArcGIS and Mapinfo?
I am using ArcGIS for 2 years. but some of my friends use mapinfo . I am confused. any clear ideas about it.
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bathy major and minor contours
hi, I have to compare some bathy data from two different surveys (two different years) The old data have in the table of attributes : "bathy grid=0.3" and "Major" and "minor" contour. That is why we have asked to the Client to produce a shapefile which will have consistency with this. The shapefile he has produced…
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Deriving rivers / streams from the contour lines;
Hi All, I couldn’t figure out if there is a way to derive rivers from the contour lines. I tried to convert a contour to dem by using the Create Tin, tin to Raster tools. Then, I used the following tools in this order: Fill Flow direction Flow accumulation Raster calculation (setnull ("flowaccumulation",0)) Raster to…
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Metadata wizard deletes metadata?
I used the Metadata Wizard to write metadata a few weeks ago. Now I am going back and making revisions to the metadata, however I noticed that everytime I open the XML through the wizard any pre-existing text is deleted. This is really frustrating considering I need to do it all over again. Is that a default function that…
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Alaska's Best Places
Hello, I wanted to share a storymap to highlight some of the best places around Southern Alaska. If you have your own content, images, and stories, lets share them. http://arcg.is/29PYvmf Thanks!
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What is the standart for BAG creation?
Hello Dear GIS users. Could you please advise with question regarding BAG file? * We are starting work with BAG format. We have Fledermaus and ArcGIS. Input data is x, y, z gridded file (0.5x0.5 meters). We calculate uncertainty using special order, after that export to BAG. When we compare in ArcGIS GeoTIFF from…
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Thanks a lot sir.
Sent from Yahoo Mail. Get the app
Thanks a lot sir. Sent from Yahoo Mail. Get the app
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ArcCN-runoff
Where can I download this ArcCN-runoff extension tool?
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Calculating CN values by using ArcCN-Runoff: Some problems with the ".dbf".
Hello to all: I am experiencing some problems in the calculation of the CN values of an specific watershed. I think the reason could be that ArcCN-Runoff is not able to read my .dbf database properly or, probably, I am not doing it well. Could anyone please show me an example of a .dbf which works correctly? Thanks in…
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ArcCN runoff script unit conversion
Hello! I have a question on unit conversion while using ArcCN runoff script. I am using metric measurements. My area data for landuse and soil maps are in squaremeters. Precipitation data is in mm. In original artical writers use inches for precipitation data but they have squaremeter unit for area data as I understood.…
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To many points?
Sometimes you just have too many points, so how do you thin them out intelligently?
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con statement
Hello, I am delineating streams using the hydrology tools in the arc toolbox and I have an issue. It is not that I dont know how to do it or what tool to use, but it is a threshold decision. The "conditional statement" defines the minimum number of pixels that are required to "flow" into another pixel in order for that…
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Can We Control Visibility of Individual S57FeatureObject?
Hello, After loading the S57 file into HydrographicS57Layer, we can control the visibility of the layer (e.g. entire S57 file). However, we have the requirement of controlling the visibility of S57FeatureObjects that grouped by Acronym. That is, based on the user input, we want to set one set of the S57FeatureObjects with…
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Offshore Windfarm model
Windfarm Model
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Seabed Survey Data Model
The ZIP package contains: * Data Model Conceptual - contains pdf of the data model diagrams * Data Dictionary - contains a pdf of the SSDM data dictionary * Data Model Templates * GIS - contains the geodatabase template, XML schema * SeabedML - contains the SeabedML GML application schema * Data Model Guidelines - contains…
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Managing bathymetric data in a hydrographic survey company
As data volumes increase, managing the large hydrographic datasets is not limited to the world’s hydrographic offices. The hydrographic survey companies contracted to carry out the surveys need to be able to store their data in an easily accessible, spatial and quick manner. They also need to be able to serve their data to…
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SSDM_Conceptual_Model_Diagram.pdf
The Seabed Survey Data Model (SSDM) diagram for ArcGIS!