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Spatial Analyst is an extension within ArcGIS that provides a range of spatial modeling and analysis tools.
1
vote
Accepted
R spatial: add new attribute to S4 class object?
The simplest answer...
I had wrong position of the [i,] indexing. Instead of indexing the shapefile polys[i,]@data$open_edge <- TRUE the correct indexing is in shapefile attribute table slot polys@da …
0
votes
0
answers
103
views
problem saving GRID to .img keeping original names (export by attributes)?
I am really new in Python programming. I try to make a loop for Extract by Attributes tool in ArcGIS 10.1. I have a huge dataset of raster (760pc) and I want to extract a specific value. This part of …
1
vote
1
answer
559
views
R spatial: add new attribute to S4 class object?
I am trying to check if my shapefile polygons have open edge or not. To have an open edge, the polygon either has no neighbors, or is >5 m taller than its neighbours. So, I want to add this new field …
1
vote
0
answers
405
views
Identify adjacent and no-adjacent polygons between multiple shapefiles using R?
My spatial data are recorded multiple years, providing one polygon for a year. (Polygon is derived from raster data, so I can use rasters instead if it will be easier to run my calculations).
I sta …
1
vote
1
answer
397
views
Only extracting values if point overlap raster using ArcPy
I have a set of 100 points and 100 rasters. Points are stored in one shapefile over large spatial extent and small, not-overlapping rasters are stored in gdb. Rasters are something like tiles. Togethe …
1
vote
2
answers
1k
views
Adding polygon attributes (Shape_Area) to point data using ArcGIS ModelBuilder?
I converted my polygon feature class P1 stored in GDB to centroids by Feature to point tool. I would like to keep the Shape_Area and Shape_Length, native to original polygons, in my resulting Centroid …
2
votes
2
answers
417
views
Selecting features based on relative distances between features in single shapefile using Ar...
I have a set of polygons within a single shapefile. I want to keep only polygons, which are located >500 meters from another polygons in the same shapefile.
I thought to apply NEAR Tool in ArcGIS to …
3
votes
1
answer
1k
views
Con expression in two rasters ArcGIS, raster calculator
I would like to write a condition in ArcGIS 10.1 in Raster calculator.
I have 2 overlapping rasters (Ras1.img, Ras2.img) with different attributes in attribute table:
Ras1.img: Class - results o …
25
votes
3
answers
48k
views
Merging multiple SpatialPolygonDataFrames into 1 SPDF in R?
I have created 2 polygons in QGIS. Using them in R, polygons become automatically SpatialPolygonsDataFrame (SPDF). I would like to merge them into single SPDF (as is super easy in ArcGis using Tool Me …
21
votes
Merging multiple SpatialPolygonDataFrames into 1 SPDF in R?
Super easy solution provided by @mdsumner:
library(sp)
library(raster)
library(rgeos)
library(spatstat)
library(rgdal)
library(maptools)
setwd("C:/...")
a<-readOGR(dsn=getwd(), layer="pol.a …
1
vote
Selecting features based on relative distances between features in single shapefile using Ar...
Thanks to @fatih_dur I realized that it is possible to use the same features in the Near Tool (spatial analysis) as the Input and Near feature
Thus I created a model in ModelBuilder where I firstly …
0
votes
0
answers
135
views
Identify ID of original feature and its surrounding buffer? ArcGIS 10.1
I have a set of polygon features, stored in geodatabase (ArcGIS 10.1 Desktop). I want to create a surrounding buffers. I want further to be able to acknowledge the ID of original feature to ID of sur …
1
vote
Accepted
Adding polygon attributes (Shape_Area) to point data using ArcGIS ModelBuilder?
Just to complete @PolyGeo answer (as it has took me some time to figure out what and how to copy the polygon data... :-)
When running Intersect tool over Polygon feature class (fc) stored in geodatab …
2
votes
1
answer
524
views
R {sp} spatial subset: keep so many polygons as number of overlapping points
I have a set of overlapping spatial points and spatial polygons. I need to subset the polygons by overlapping points, but, if my polygon contains 2 points, I need to keep polygon twice, etc.
To keep …
1
vote
1
answer
454
views
MBG_Orientation: ranges from 0-180, instead of 0-360? (ArcGIS, Minimal Bounding Geometry)
I'm trying to understand the concept of the Orientation of the Minimal Bounding Geometry: Minimum Bounding Geometry (Data Management toolbox, ArcGIS Desktop 10.1).
I run the tool Minimal Bounding geo …