Questions tagged [data-management]
concerns the methodologies and processes for managaing geospatial data
96
questions
-1
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18
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Large geospatial data (LiDAR, hyperspectral, etc.) delivery applications [closed]
I'm relatively new to the geospatial world and trying to understand the best methods for delivering customer data through the web. We've used FTP in the past and I know some folks will use ArcGIS ...
0
votes
0
answers
27
views
Cannot use Near() due to schema lock
I have recently been able to add 2 layers to the Table of Contents is ArcGIS Pro using ArcPy. It uses code like this:
ResultPath1 = r"*DirectFilePath*.gdb\GeocodedDonationLocations"
# ...
2
votes
1
answer
107
views
QGIS : how can I keep data while removing the source file?
I imported some .kmz files to QGIS as vector layers.
Now, I want to keep this data but remove the files : I want the data to be stored (baked) in the qgis file itself.
How can I do that ?
- 256
3
votes
2
answers
145
views
How can I use spatially filtered PostGIS layers in QGIS without losing the ability to edit them in QGIS?
I have some vector layers for a whole country stored in a PostGIS database. I want to use that data in different QGIS projects that stand for different regions of the country. In the regional QGIS ...
- 2,217
1
vote
2
answers
128
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Array transformation: RasterStacks of time-series into Array of matrices
I have 9 RasterStacks with 65 layers containing time-series of satellite imagery. Each stack contains a time-serie of each Sentinel-2 band (B2, B3, B4, B5, B6, B7, B8, B11 and B12). The shape of the ...
- 1,084
2
votes
0
answers
120
views
SelectLayerByAttribute in ArcPy creating copy of layer
I'm trying to use the SelectByAttribute_management tool in ArcPy using :
import arcpy
arcpy.management.SelectLayerByAttribute("Name_Layer",'NEW_SELECTION')
When I write it in the console, ...
- 21
4
votes
1
answer
600
views
Is it possible to define a spatial resolution for a Geometry column in PostGIS?
In various spatial file formats, it is possible to define the spatial resolution (tolerance), for which a vector geometry is saved and treated (Oracle DB, ArcGIS). e.g. if the geometry layer is using ...
- 1,132
1
vote
1
answer
93
views
Joining attributes from two features classes (ArcGIS Pro)
I have two feature classes containing building footprint polygons. Both are of the same area and can be superimposed (not 100% but very close). However, they do not have the same attributes. Therefore ...
- 27
4
votes
2
answers
566
views
Using Python Toolbox Parameters
I want to specify an input for each column of the 'field compare' parameter, so it would be 'baseFeatures' would link just to the 'Base Fields' column and 'updatedFeatures' would just link to the '...
- 41
9
votes
2
answers
9k
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Exporting single band from multiband raster in QGIS
In QGIS 3.16.8 I have a raster image in TIFF format which has 17 bands. I need to extract different band combinations as separate image files. Some of the combinations consist of images with single ...
- 93
1
vote
0
answers
82
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Line that returns to the same point using XY To Line
I am using XY To Line in ArcMap 10.7 to project the direction a fish swims between acoustic receivers (points). There are instances where the fish swims away from a point and back to the same point. ...
- 41
2
votes
2
answers
201
views
Duplicating data for use in new ArcMap project
I am using ArcMap 10.8.1.
I wanted to make a new project based on the same data as an existing project, so I duplicated the project file and started editing one of the layers in Editor Mode. I then ...
- 23
1
vote
1
answer
674
views
Export Attachments using Python script to modify file name [ArcGIS Desktop 10.8.1]
I'm trying to export photo attachments from a railroad crossings dataset taken with ArcGIS Collector, and would like to customize the naming convention so that the file name contains the crossing ...
- 125
1
vote
1
answer
571
views
Advanced editor tracking in ArcGIS Pro
Is there a way to track edits which have been made to a feature class in ArcGIS Pro? I.e. a field being auto populated which would give information in regards to what kind of edit has been made, e.g. &...
- 17
1
vote
0
answers
26
views
Syncing data without an External Key?
I'm working with ArcGIS for desktop. I have received data from a third party and am trying to update my CAD system via GISLink. In order to connect the new data with the currently-used data, certain ...
- 133
1
vote
1
answer
414
views
How do you store/organize/manage your own data? [closed]
Lately I was wondering how one could or should store his/her own data.
As I studied GIS and I am working on different private projects using GIS data, a lot of data have accumulated on my local hard ...
- 883
0
votes
2
answers
740
views
I want to create composite band image through batch processing using ArcPy
I have multiple Sentinel 2a raster images in separated folders at same location, which means every image is in separate folder. Now I want to create composite band of each raster. I have written a ...
-1
votes
1
answer
441
views
Creating composite band image form multiple Sentinel 2 raster data using ArcPy
I have multiple Sentinel 2a raster images in separated folders at same location, which means every image is in separate folder. Now I want to create composite band of each raster. I have written a ...
0
votes
0
answers
249
views
ArcGIS Pro Python Validate and Alter Field Names
I want to check if the field names in shapefile start with a number (or other forbidden character) or if they contain spaces. If so I want to update the names into some which are correct.
I tried:
...
- 13
1
vote
1
answer
102
views
Combine duplicate rows but keep class information?
I'm stuck trying to figure out how to avoid combining and deleting duplicate values manually. I'm working with parcel data, and based on some property information, each parcel is either in group a, b, ...
- 13
2
votes
3
answers
4k
views
Managing large data files, vector and raster, in QGIS 3
I work for a local authority so use data covering a large area. Therefore some datasets I use become large and cumbersome.
For example I have a vector layer for contours and a raster layer for ...
- 1,349
0
votes
1
answer
53
views
Dataframe data handling or SQL Query in ArcMap
I'm trying to perform an SQL query in ArcMap with the following data set, and I have not been able to solve the problem.
The idea is to keep all the information of the columns, but for example if the ...
- 11
1
vote
1
answer
73
views
How do I find content in ArcGIS Online which is not in a folder
I have a lot of content on AGOL, most of it is divided into folders. However there are some datasets which are not in folders and only exist under All My Content. How do I find the datasets which are ...
- 5,915
1
vote
1
answer
28
views
Adding Raster to Table of Content in ArcPy without losing information on General tab on layer properties?
I use the following python script to generate the layer file (.lyr) from raster in Geodatabase
import arcpy
raster = "Raster path in gdb"
LYRpath = "C:...\layername.lyr"
arcpy....
- 11
-1
votes
1
answer
110
views
Making XY Event Layer into Copy Feature layer using ArcPy?
I am taking a CSV file and importing it with the XY Event feature layer. I then am trying to use the Copy Feature tool to get "Object ID" assigned to each row in order to run an attribute query. My ...
- 43
1
vote
1
answer
288
views
Shapefile, clip or project first when both are necessary
This is a question mostly out of curiosity, but I do it enough if there were a better choice I would stick with that.
Using ArcMap 10.6, when a shapefile needs both clipped and projected is there an ...
- 450
2
votes
2
answers
375
views
GUI for managing GeoPackage (and other geodata forms)?
I know that the browser in QGIS has quite a bit of capability for managing GeoPackages and other geodata, but I was wondering if there was a lightweight, standalone tool similar to ArcCatalog?
- 5,906
1
vote
4
answers
2k
views
Can you move a gdb from one folder to another and keep the files?
I've copied a .gdb folder from a main folder to another and all the files that were created using ArcMap weren't there in the copied folder.
Why weren't these weren't moved as well?
Shouldn't they ...
- 95
1
vote
0
answers
50
views
Editor Tracking setting on a FGDB preventing data display in QGIS
I have a File Geodatabase containing a polyline feature class. I can drag this into QGIS (3.0.0) and view the data in a read-only format. This is fine, for the purposes of the majority of users of ...
- 342
0
votes
0
answers
96
views
New Feature Layer isn't showing up in Geodatabase
I've been using the following script to add a new layer to a geodatabase.
arcpy.env.overwriteOutput = True
in_features = "lease_polygon_testing"
out_layer= "lease_polygon_testing_Layer3"
...
3
votes
0
answers
98
views
Raster NoData Value
So over the years working with elevation and image rasters in various formats I always kind of ignore the value of No Data. I usually just let the software/vendor/someone else decide on the value for ...
- 4,377
1
vote
1
answer
345
views
Copying rasters which are intersecting with polygons using ArcPy?
I'm new to ArcPy and to Python in general.
I have a huge raster dataset of all over the World (~1000 tiles .tif) and i'd like to automatically copy the tiles which are intersecting with 24 polygons (...
- 363
1
vote
0
answers
126
views
Maintaining point data attributes when creating polylines?
I created a model in ModelBuilder to take a set GPS coordinates (containing latitude, longitude, timestamp, user_id) from different users, create a polyline feature class, and then split the polyline ...
- 213
2
votes
2
answers
449
views
FME and WebDAV resources
FME is capable of reading and writing from and to a broad variety of data sources and formats, but is it somehow possible to read/write from/to a WebDAV resource with FME?
A cloud storage solution ...
- 541
0
votes
0
answers
306
views
Seeking open source Metadata management tool [duplicate]
I am looking for an open source web based metadata management tool for geographic data. I have gone through Seeking Open Source ISO Metadata Editor?
It recommends a tool like Geonetwork. Geonetwork at ...
- 614
0
votes
1
answer
568
views
Storing large amount of geotiff? [closed]
I have about one million small geotiff files of a same region at different time. This should be a small amount of data, comparing to many other GIS applications. However, storing them as separate ...
- 111
3
votes
0
answers
51
views
File Shortcuts For Datasets? [duplicate]
Each of my projects is a directory in which I have the following folders:
Data/.. (contains .shp files, tables, and rasters in various formats)
Maps/.. (contains .mxd files that depend on the files ...
- 331
2
votes
3
answers
1k
views
Splitting layer based on ID
I have a single layer of points I need to split into separate layers based on the unique ID. Below is an example of how the points are labeled. First digit is the feature number and after the decimal ...
- 29
2
votes
1
answer
317
views
How to Split attribute tables into new records (Data Management)
(Arcgis user)
I created a fgdb for inspections in the Esri Collector app.
How can i create a export table of the feature that splits the fieldnames into seperated records related to fieldname Code?
...
- 31
0
votes
1
answer
250
views
Possible data corruption when copying geodatabases to and from multiple hard drives
I hope to manage an ArcGIS Pro project and geodatabase between my personal laptop, external hard drive, and a shared office computer.
For the current project, I am accessing files from one ...
- 133
5
votes
2
answers
599
views
Geodatabase compression schedule
Is there a way to schedule a GDB on an SQL server to automatically compress once a day? As of right now I need to remember to open catalog and compress a Geodatabase manually everyday.
- 301
2
votes
1
answer
353
views
Join Attributes by Location giving NULL values in Python Standalone Application
I’ve been working on a standalone Python application using the QGIS Processing Framework. For my application, I am supposed to determine average values of a field from a polygonal vector layer along ...
- 154
2
votes
2
answers
665
views
Create Fishnet option
I'm using ArcGIS and closely following this tutorial http://economics.mit.edu/files/8945 to process data in ArcMap. My problem arises because in my software I can't find the Create Fishnet option in ...
- 23
3
votes
3
answers
5k
views
Count points within each buffer QGIS
What I am trying to accomplish is to find the number of points that intersect a created buffer. I.E. I have a layer called "Buildings", for each building I have fixed distance buffers (<400m). I ...
- 131
5
votes
3
answers
1k
views
Using SSURGO data without MS Access?
I'm building a GIS for a large-scale family farm. We don't have a lot of resources to devote to this, as it's a new part of the farming operation and therefore viewed with some reserved skepticism. ...
- 81
0
votes
1
answer
98
views
Feature class error in Feature compare (Data Management) analysis
I have some troubles on performing a feature compare data analysis.
I created a new feature layer with different point variables, see picture. The two different colored points are from two different ...
- 5
5
votes
1
answer
112
views
How much of a large collection of files is spatial data?
We need to determine how much of the 6.5 TB used space on a shared network drive is geographic or spatial data. It's a squirrels nest, built up over 3 decades from hundreds of people (though by volume ...
- 28k
4
votes
2
answers
255
views
What is the format of these data files? CNT, LAB, PAL, etc
I was given data which is arranged in folders as shown in the following picture:
I am using ArcGIS 10.1. I believe feature datasets in ArcGIS only exist in geodatabases. But the datasets are arranged ...
- 63
1
vote
0
answers
247
views
What is the recommended way for team coordination in GIS (ArcGIS, QGIS, etc.) [closed]
I am preparing a team of around 18 GIS analysts to work on 12h/12h work cycle to attain 24h/day work rate. This means two 9-person teams, one for each period.
All analysts will have access to various ...
- 409
2
votes
1
answer
153
views
Creating random points in vectorized raster in ArcGIS for Desktop?
Im conducting an accraucy assessment of an NLCD map. First, I wanted to create a few points in each land cover category in Arc, convert it to kml format, then pull it into Google Earth to make sure ...