1
vote
0answers
11 views

How to create a circle vector layer with 12 sectors with Python and to save average value of underlying raster in each sector?

Hi I am writing a code with Python 2.7 using Arcpy 10.1 and I guess I am doing stuck with a silly problem that lies under my eyes. I have created a grid of points (with "Create fishnet" function) over ...
0
votes
0answers
39 views

How to extract raster using corresponding polygon using ArcPy?

I have to perform a simple raster extraction, but I can't find the way to do it. In a polygon layer, I have watersheds with their ID's. And in a folder, I have rasters, each one corresponding to a ...
1
vote
1answer
40 views

How to combine Boolean and Fuzzy logic?

So I have a set of 5 Fuzzy Memberships and a polygon feature class, to which I already added a yes/no field. For the final map, I need to combine/overlay all Fuzzy Memberships and the rasterized ...
2
votes
4answers
120 views

Combine overlapping rasters with priority to values of specific rasters?

I have 5 rasters that cover a large area. I want to combine all 5 into 1 raster. Each raster has data for portions of the total area that none of the other rasters cover. Raster C overlaps A,B and D. ...
0
votes
0answers
19 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
2answers
88 views

Copy Jp2000 from Mosiac Dataset turns white

I am trying to copy a raster to jp2000 from another File Geodatabase that I created as a Mosaic Dataset. It came out as a whiteout in the middle. I don't know what it cause this. See screenshot : ...
1
vote
1answer
59 views

Calculation amount or number of certain pixel-values in a raster

It seems pretty simple but until now I could not find a proper solution: In a given raster i want to know the number or ratio of e.g. red pixels. Edit: to be more precise: I have a number a arial ...
1
vote
1answer
61 views

Extracting data from a raster to a polyline based on start and end points?

I have a polyline shapefile with the attributes seen above. startx and starty represent the coordinates of the beginning of each segment of a polyline. endx and endy represent the coordinates of ...
0
votes
1answer
35 views

Export raster file geodatabase to jp2 or jpeg?

Can I export or copy a raster from a file Geodatabase and create a output to jpeg or jp2000 formate? I was reading two different helpline on ArcGIS 10.1 and wasn't sure if I was supposed to export ...
1
vote
1answer
76 views

Multiply a raster list with a field value list in a FOR loop in ArcPy

I'm trying to create a simple map algebra calculation not managed by ModelBuilder, but writing it in Python is trickier than I thought. I have a list of raster in a GDB and I must multiply them by ...
0
votes
2answers
80 views

Can you change the processing extent in environment settings using python to a shapefile?

I have managed to do this manually at Geoprocessing>Environments>Processing Extent and setting the shapefile in the drop down bar. I was wonder if this could be automated with a python script? My ...
4
votes
2answers
62 views

How to force 1-bit raster output in ArcGIS 10.1 for Desktop?

Any ideas on how to force a 1bit raster output in ArcGIS 10.1? By default, ArcGIS is being very dense about recognizing pixel depth. I have a binary raster [0,1] and a mask raster [1] and they are ...
1
vote
0answers
55 views

Fill tool creating large output files from sections of a Raster

(This raster information for one of the clipped rasters) I have a raster image representing a landscape that is about 1.3Gb. I clipped the raster into 31 sections which vary in size from 10Mb to ...
1
vote
1answer
60 views

ListRasters not recognizing raster files in python

I have 2 rasters in my workspace, one in TIFF Format and the other in GRID format: "C:\ExampleFolder" When I use the python script: import arcpy >>> ...
2
votes
3answers
191 views

Clip a raster using a shapefile into multiple rasters?

I have a raster file representing a large area and a shapefile of 30 polygons representing watersheds. I would like to clip the raster with the shapefile to create 30 rasters representing each ...
0
votes
1answer
43 views

Topo To Raster executing but not creating the raster

I am using Topo to Raster by File (ArcGIS version 10.1) via arcpy on a large stream and point dataset. Arcpy runs fine and executes without issuing any error message, however it does not create the ...
0
votes
1answer
50 views

Attribute names being truncated during extraction

I have 30-40 raster layers and each raster has approximately 40 columns. The attribute/column names are very long, and the beginning of each column name is the same. During the extraction process, ...
1
vote
0answers
64 views

TIN to Raster Tool, output elevations are 3.40282e+038 and -3.40282e+038, tried calculate statistics didn't work

I have an input TIN file that I created using Create TIN. The elevations are all correct. When I convert the TIN to Raster using the tool, my output elevations are 3.40282e+038 and -3.40282e+038 ...
3
votes
1answer
66 views

Create a point at the highest value in a raster ArcGIS 10.1

I am trying to find the location of the highest value pixel in my Direct Solar Radiation Raster. I can see the extent of the data in my raster but don't know where the highest value pertains to. Is ...
1
vote
1answer
222 views

How to Create Cost Surface Raster for Least Cost Path Analysis?

I have a DEM raster and would like to carry out a cost path analysis. Among other factors such as slope, proximity rivers etc. I would also like to take elevation into consideration. According to ...
0
votes
1answer
74 views

How to get polyline features from a raster file using ArcGIS 10.1?

I have a watershed accumulation file look like this: There are several white lines by visual, and I tried the raster to polyline tool and got this: Are there better ways to extract polyline ...
2
votes
0answers
89 views

Why does Topo to raster tool stall in ArcMap 10.1?

I'm having the following problem - An 8 mile by 4 mile set of 2 foot contours. Whenever I start the topo to raster tool, I get a constant loop of the tool running. And running, and running, and ...
1
vote
0answers
62 views

Why doesn't the mosaic to new raster tool or the mosaic tool work when I try to use them?

I am trying to mosaic 4 raster datasets of elevation together using the 'Mosaic to new raster' tool in ArcGIS 10.1. I have even tried using the 'mosaic' tool and it still doesn't work. The errors that ...
1
vote
1answer
39 views

How to create a raster with rotated cell orientation from lattice points - ArcMap 10.1

I am trying to create a raster layer from gridded points where the cells have a rotated orientation. Each point is the center of a 1.6 km by 1.6 km cell, rotated to the left. Is there a way to do this ...
1
vote
1answer
95 views

How to extracting raster data to multiple polygons?

I have a reclassified raster dataset (10 classes) and I want to find out the area of each class contained within multiple (hundreds-to-thousands) polygons. I have all the polygons in the same ...
1
vote
1answer
158 views

Creating Random Points in ArcGIS 10.1

I would like to create random points across my study area (which is a DEM raster) using the Feature Class> Create Random Points. However, I need to select/copy/move/delete these points and re-arrange ...
0
votes
1answer
73 views

Hillshade tool in ArcMap returns terraced, pixelated image

I am applying Hillshade tool (ArcMap 10.1) to SRTM in Caucasus Mountains (border between Russia and Georgia). It gives me weird image with 'terraces' (see attachment). I reprojected SRTM from WGS-1984 ...
0
votes
2answers
84 views

How to identify valleys on DEM in ArcGIS 10.1 [closed]

First, What is the best and easiest way to identify valleys in a DEM raster? Second, how do you create a least-cost pathway for each valley in a region based on low angle slope and proximity to ...
1
vote
1answer
55 views

How to calculate the sum of all cells in a raster layer upstream of a specific point?

I have a rainfall map which covers large area. However, I'm interested in the total value of rainfall over a specific subcatchment. If I don't have the shapefile which defines the boundary of this ...
2
votes
1answer
259 views

How to perform a Cost Path analysis in ArcGIS 10.1?

Is it possible to model the easiest pathway through a landscape between many points (rather than just two)? I want to carry out a cost-path analysis, I would like to display the easiest pathways ...
0
votes
0answers
14 views

Abnormal DEM values after fill operation

With arcmap 10.1. after filling the DEM the value range is -70 to 1078, but it should be between 225 to 1200. Can anyone suggest me a methodology or the necessary steps in arcgis 10.1 to mend my ...
1
vote
3answers
183 views

Cache generation failed. Progress gets stuck at 0%

I'm trying to publish a map service containing a large .tif raster (48GB). I managed to publish a small cached raster successfully (for testing), but when I tried to publish the large one, the cache ...
3
votes
1answer
176 views

Service published but cache generation failed on ArcGIS Server

I am trying to publish a map service containing a cached raster layer on our ArcGIS Server Enterpise 10.1. I analyze the map service before publishing and no error. The error I get when publishing ...
3
votes
0answers
50 views

Calculate surface elevation from DEM of pit and known volume with which it is being filled

I am using ArcGIS 10.1. I have a DEM of a pit. I have a known volume of material that I want to put in the pit. I want to know what the elevation of the flat surface of this material will be ...
2
votes
1answer
81 views

Does ModelBuilder need to use variable to define projection and then re-project?

I am trying to build a Model in ModelBuilder to create two different process raster datasets: One set is to define a raster dataset to set a WGS 84 projection; and then the second set is to take ...
1
vote
1answer
103 views

How to create attribute table for raster data?

I have raster dataset for rainfall but its not having attribute table. How can I create tabular data using the same raster file? How to join it back again to it? Software used is ArcMap 10.1.
1
vote
0answers
69 views

How to Iterate ModelBuilder for Zonal Statistics?

I want to use ModelBuilder to split a DEM into multiple tiles, then run the iterator on each tile made for the Zonal Statistics tool to find the highest point(s) in each tile and give these as an ...
2
votes
2answers
201 views

Most efficient option to create a raster basemap for a web application?

I'm sure this is probably a common problem and many have already found the right answer. I have a large mosaic raster file (a city's ortophoto) in .ecw fromat and we want to use it as a basemap in a ...
0
votes
1answer
177 views

How to Iterate through Bands of Raster using ArcGIS 10.1 ModelBuilder?

I have a large number of rasters with 3 bands (R,G,B). What I want to do is add all 3 bands of each raster together to end up with a single band image with the summed R,G,B values in each pixel but ...
0
votes
0answers
41 views

Creating a mosaic dataset from pre-existing mosaic datasets

I wanted to see if anyone has tried this, or knows of any issues that may arise from performing such a procedure: I have about 20 mosaic datasets already created in separate file geodatabases. I ...
0
votes
0answers
17 views

Classifying raster pixels using polygons [duplicate]

I am trying to retrace some steps from an experiment I conducted a couple weeks ago. To make a long story short: I didn't think it was the right result so I didn't write down my procedures. I think ...
1
vote
1answer
99 views

How to work with 16 GB orthophoto raster

I would like to use one GeoTIFF raster in a custom ArcGIS-Engine Application, but my provider gave me 4 orthophotos GeoTIFF 4 GB each, because GeoTIFF is limited to 4 GB. Is there any other way to ...
1
vote
1answer
34 views

Calculating statistics for an Image Service

I haven't been able to find much information at all in regards to ArcGIS 10.1 Function Template Chains... I need to be able to load a .rft in my image service and calculate statistics... so I am using ...
1
vote
0answers
95 views

python.multiprocessing and “FATAL ERROR (INFADI) MISSING DIRECTORY”

I have a question which is closely related to this old question here: python.multiprocessing and "FATAL ERROR (INFADI) MISSING DIRECTORY" I have also looked at this, which seems to relate ...
1
vote
1answer
39 views

Why is my raster offset after I use a tool such as Reclassify?

I'm using ArcGIS 10.1 and have noticed a strange problem. Often,though not always, when I use a tool such as Polygon to Raster, Reclassify, or Mosaic to New Raster, the resulting raster layer is ...
0
votes
0answers
55 views

Using arcpy.GetRasterProperties_management gives strange results

I have a loop which goes through folders and do some raster operations. Inside this loop I checked for a raster properties using arcpy.GetRasterProperties_management with NODATA parameter. And then ...
0
votes
1answer
114 views

Problem with converting rasters to arrays and adding them to main array, then converting to raster via NumPyArrayToRaster : output is NoData values

I have a process that aims to loop through a list of rasters (testing with only 3) covert each raster to an array, add the array to an existing 'template' array, then save the final array back to a ...
1
vote
1answer
151 views

Read layer symbology class color with ArcPy

I am using ArcPy within ArcGIS 10.1 and attempting to read symbology from a *.lyr file created by a raster dataset within ArcMap. My goal is to be able read out the RGB (color) values assigned to the ...
2
votes
0answers
64 views

Raster Catalog to Raster Dataset ERROR

I have a problem converting my Raster Catalog to Raster Dataset. I have an error (see below) after 4-5 hours of process - all rasters have ~21Gb. Is there something wrong with data? I will be ...
3
votes
1answer
837 views

creating a buffer in a raster layer

I've got a raster layer separated into 3 zones, representative of marine park zones. What i'm trying to do is make it so that where zone 1 is adjacent to zone 3, there is a "buffer" between them, of ...