Frequent 'grids-graticules+grids-graticules+or+arcgis-desktop' Questions

66 votes

3 answers

95k views

Layers with same coordinate system should align/overlap in ArcMap but do not?

I put 4 different layers into my ArcMap document, but only one of them will show up on the map! I should be seeing the other 3 layers as well. When I do a Zoom to layer, I can see one layer, but I ...

CaliforniaGirl

681

asked Feb 20, 2012 at 2:19

10 votes

3 answers

8k views

Assigning point IDs to respective start and end attributes of polyline using Arc Hydro with ArcMap

I have two shapefiles, Point and Polyline. I'm trying to populate my polyline layer with the point data ID (systemID) where the lines start to where they end; eg. create two columns (from and to). The ...

JrUser

159

asked Dec 10, 2014 at 4:00

13 votes

1 answer

4k views

Auto incrementing field based on groups within feature class?

I am needing to auto increment a field based on groups within a feature class. I have 8 plots within a given polygon and I need to assign them an ID from 1-8 for each set of plots within each polygon. ...

Becks

133

asked Jun 27, 2016 at 23:10

40 votes

12 answers

73k views

Exporting feature class into multiple feature classes based on field values using ArcGIS Desktop?

I have a feature class with over 2,000 features, and I need to make them all individual feature classes based on a field. Is there a way to do this?

Sophie

403

asked May 19, 2011 at 22:32

22 votes

1 answer

6k views

Using customized Coordinate System in ArcGIS Desktop?

I don't know so much about coordinate systems... In my office we use to deal with spatial data coming from archaeological sites. Each site has its own x-y-z coordinate system (GCS). Three simple ...

Maik

461

asked Jan 22, 2014 at 14:49

9 votes

2 answers

1k views

Computing dominant area in polygon using ArcGIS Desktop?

First, I have a shapefile consisting of square grids and each grid has an ID. Second, I have a shapefile consisting of different zones (with IDs). A grid ID in the first shapefile can contain many ...

GISnew

359

asked Nov 14, 2016 at 17:29

60 votes

11 answers

70k views

Removing small spaces (slivers) between polygons

I have a set of polygons representing administrative districts. The districts were digitized by hand, and there are small spaces (slivers) between polygons where the polygons should be touching. How ...

zoo

711

asked Jun 14, 2011 at 14:07

19 votes

5 answers

16k views

Using SRTM Global DEM for Slope calculation

I have downloaded SRTM GDEM (~90m resolution). I am using ArcGIS 10. I have tried to use the Spatial Analyst tool to compute for slope. However, I cannot compute for the slope. The output values has ...

user2543

1,188

asked Sep 19, 2011 at 3:44

8 votes

1 answer

3k views

Grouping village points based on distance and population size using ArcMap

How do I group a number of villages based on their distance to each other and total cumulative population size? I have a vector file of say 100 village points attached to atable containing data on ...

Rassoul Mahiny

91

asked Nov 24, 2014 at 20:46

3 votes

2 answers

7k views

Create a line perpendicular to an existing line in ArcGIS

For an existing set of line features, I would like to generate a perpendicular line, of say 1km, at the midpoint of each existing line feature in ArcGIS. I imagine that The methodology would be to: ...

Will McInnes

450

asked Jul 12, 2016 at 21:53

13 votes

3 answers

19k views

Calculating sequential numbers into sorted table using ArcMap

I am using ArcMap 10.3. Is there a way to calculate a sorted field with sequential numbers in the Field Calculator or using an Update Cursor in ArcPy? I have seen Sorting feature class to calculate ...

Midavalo♦

29.9k

asked May 15, 2016 at 22:20

32 votes

6 answers

46k views

Creating Centrelines from Road Polygons/Casings using ArcGIS Desktop?

I want to create center lines from road polygons. Are there any automated tools in ArcGIS for Desktop to do this? I am including a Screenshot of my vector file below.

Binoy

767

asked Jul 19, 2012 at 6:53

37 votes

6 answers

41k views

Difference between map layer and spatial dataset (e.g. feature class, shapefile)?

What is the difference between a feature class and a feature layer? To me they seem very similar in concept.

user

1,337

asked May 29, 2012 at 6:19

7 votes

5 answers

21k views

Converting LiDAR data to raster (DEM/DSM) for ArcGIS input?

I was wondering if there is an option to convert LiDAR data (.las) to a raster/grid (DEM/DSM) format that ArcGIS 10.0 can read?

Asal

79

asked Aug 15, 2011 at 22:55

6 votes

4 answers

7k views

Checking if polygon fits inside another polygon using ArcGIS Desktop?

How do I check if one polygon fits inside another polygon? Furthermore how do I automatically check if one polygon fits in other polygons of my shapefile? I have a shapefile with thousands of ...

GeoDH

71

asked May 19, 2015 at 13:14

4 votes

5 answers

9k views

Creating polygon feature class from area in one not covered by another using ArcGIS Desktop?

I am working on a project doing spatial analysis at a statewide level. I am looking at a form of transportation coverage in a state, and part of my analysis involves buffers and drive time polygons. I ...

rachel.passer

882

asked Jun 30, 2014 at 20:40

31 votes

5 answers

83k views

Converting ArcGIS layer style to Styled Layer Descriptor (SLD) file?

I am putting together a GIS server using GeoServer and need some help with importing my layer styles from ArcGIS 10 to SLD format. I have one layer in ArcMap properly symbolized and labeled, how ...

Furlong

2,125

asked Nov 22, 2010 at 23:59

29 votes

3 answers

12k views

Dividing polygon into specific sizes using ArcGIS Desktop?

I have several thousand irregularly shaped polygons in a shapefile. I want to be able to split each polygon into three areas, and to specify what the size of those areas (they sum to the previous ...

djq

16.3k

asked Jan 19, 2011 at 21:58

9 votes

2 answers

21k views

Sorting feature class to calculate sequential ID field using ArcGIS Field Calculator?

I am in ArcMap and I want to sort the records based on a field and then do a Calculate Field with an auto-incrementing value with the sort in-place. Any ideas? It looks like I could get an update ...

Justin

3,398

asked Nov 9, 2011 at 18:50

6 votes

6 answers

28k views

Deleting polygon defined area from raster layer in ArcGIS Desktop?

Which tool do I use in ArcGIS 10.1 for Desktop to exclude areas covered by vector polygon layers from a raster layer? I want to keep portions of the raster layers that exclude the portions covered ...

nancy

61

asked Jun 8, 2015 at 12:12

65 votes

5 answers

47k views

Building effective heat-maps?

Using ArcGIS, QGIS, Grass, and/or GVSIG: What are some of the tools and processes involved in building effective heat maps? What are the plugins involved? What are the major data requirements? What ...

Community wiki

6 revs, 3 users 62%
dassouki

7 votes

2 answers

4k views

Does Calculate Value (Model Only Tool) work correctly in tools run in Batch?

Am I correct that if my model has a model-only tool (Calculate Value), and then I run the model as a batched process, it will not run the Calculate Value expression? I wrote a model to upload, ...

MBarretts20

371

asked Oct 16, 2012 at 21:01

40 votes

15 answers

121k views

Converting MapInfo TAB and/or MIF to SHP using free tools or ArcGIS for Desktop core product?

How do I convert MapInfo TAB and/or MIF files to SHP using only free tools or ArcGIS itself? I've not had much luck trying to do this in the past and I don't want to have to shell out for the ArcGIS ...

Charles Roper

1,002

asked Jul 22, 2010 at 19:42

19 votes

3 answers

108k views

Basic If/Then in Python Parser of ArcGIS Field Calculator?

I am using ArcGIS 10.2 for Desktop, and I've been looking through this site, and can't seem to figure out my answer yet. Very new to VBA and Python, but lots of years with ArcGIS. I know I can do ...

BenW

633

asked Jan 2, 2014 at 23:28

16 votes

3 answers

10k views

Cartographic techniques for symbolizing routing data [closed]

Some common problems with displaying routes created from street data, such as bus routes, include: Routes may overlap themselves, such as when a route takes the same road in opposite directions ...

blah238

35.9k

asked Jun 20, 2012 at 1:57

12 votes

1 answer

2k views

Displaying images next to features in ArcMap?

I have a series of point features which represent road signs and each point has one photo of each sign associated with it. I want to create a mapbook with the locations of the signs shown as points ...

Karyn

217

asked Sep 7, 2015 at 10:52

8 votes

3 answers

25k views

Auto-incrementing field in feature class using ArcGIS Desktop?

So I'm relatively new to ArcGIS and ArcCatalog. I have created a field name of PROJECTID in a feature class in a Personal Geodatabase. The data type is TEXT. This will be a ten digit ID. The first ...

yams

307

asked May 7, 2014 at 19:25

40 votes

4 answers

10k views

Using directional shading on boundaries for cartographic effect in ArcGIS Desktop?

The attached screenshot of a National Geographic map shows some beautiful directional shading of boundaries. I'm trying to reproduce this sort of shading for a burn perimeter map, as I want to ...

Aaron♦

51.8k

asked Feb 28, 2013 at 21:28

19 votes

6 answers

23k views

How to randomly subset X% of selected points?

What methods are available in ArcGIS 10.2 to randomly subset a selection of points. For example, in the attached screenshot I am interested in keeping 20% of the selected points and deleting the rest....

Aaron♦

51.8k

asked Nov 21, 2013 at 19:58

17 votes

8 answers

23k views

Creating convex hull in ArcGIS Desktop?

I would like to be able to create a convex hull in ArcGIS Desktop 9.x, but I cannot find an appropriate tool. How does one go about creating one? I am interested in answers for all license levels: ...

Charles Roper

1,002

asked Jul 22, 2010 at 19:14

17 votes

6 answers

22k views

Preparing CSV files for use in ArcGIS Desktop?

How do I prepare CSV files for use in ArcGIS Desktop. I ask because I have some troubles using CSV files because ArcGIS attributes wrong field types to my columns and also misinterprets special ...

Dspanes

1,401

asked Jan 2, 2013 at 16:11

14 votes

2 answers

35k views

Maximum length of text fields in shapefile and geodatabase formats?

The maximum text string for a field in a geodatabase is 320 characters. The data I am importing has long character strings and it seems to be truncating when I convert into shapefile at the max ...

user23159

165

asked Oct 22, 2013 at 9:58

9 votes

7 answers

25k views

Fixing corrupt shapefile?

I have a shapefile that I was working on in ArcGIS Desktop 9.3 get corrupted somehow and it gives me the error "Number of shapes does not match the number of table records.". What I would want is to ...

Erick

871

asked Mar 28, 2011 at 6:40

9 votes

0 answers

7k views

Splitting feature class by unique values for an attribute/field in ArcGIS for Desktop? [duplicate]

I would like to split a single shapefile into multiple shapefiles by using unique values for one attribute/field to select features for each value out into a new feature class. I found ET Geowizard ...

BBG_GIS

5,835

asked Dec 20, 2012 at 7:46

44 votes

5 answers

30k views

Calculating average width of polygon? [closed]

I'm interested in examining the average width of a polygon that represents the road surface. I also have the road centerline as a vector (which is sometimes not exactly in the center). In this example,...

djq

16.3k

asked Feb 13, 2012 at 22:32

17 votes

2 answers

5k views

Ortho Projection produces artifacts

I`m trying to create a sphere-like view using qgis and the "world from space"-projection http://spatialreference.org/ref/sr-org/6980/ (essentialy an ortho-projection). ArcGIS wraps the shapes ...

user1523709

171

asked Nov 22, 2013 at 15:08

15 votes

2 answers

5k views

What is the source of horizontal and vertical striping in USGS DEMs?

When processing 30m and 10m DEM data downloaded through the National Map Viewer from the National Elevation Dataset, we noticed horizontal and vertical striping not only in the produced results, but ...

traggatmot

2,110

asked Jul 17, 2014 at 2:06

10 votes

1 answer

4k views

Adding labels with symbols to legend in ArcMap?

I'm creating a map with ArcGIS Desktop v10.2.2, showing museums as points. The museums layer has no symbol and the labels are made of a circle filled with color with the ID inside, taken from the [ID] ...

Cheshire Cat

339

asked Nov 18, 2015 at 11:32

8 votes

1 answer

933 views

Buffering point with different distance toward N, E, S, W using ArcGIS for Desktop?

I want to create buffer polygon(with curved edges) from points like this using ArcGIS for Desktop. distance toward North from a point 5, toward South 1.5, toward west 1, toward East 2. all this ...

GIS Data Butcher

860

asked Apr 5, 2016 at 12:12

6 votes

5 answers

20k views

Varying transparency of symbols within single layer in ArcMap

I have a polygon layer which I am drawing in ArcMap using a graduated color symbology: Is it possible to vary the transparency between the classes, so that the transparency tapers off with the color ...

Stephen Lead

21.2k

asked Apr 1, 2014 at 2:53

5 votes

3 answers

10k views

Iterate through multiple Raster files and compute statistics using Zonal Statistics

I have a large number of raster images. What I'd like to do is to compute statistics on different sections of these raster files using a polygon. I think everyone is suggesting Zonal statistics. ...

FlyingMGET

307

asked Nov 29, 2013 at 14:30

4 votes

2 answers

549 views

Moving shapefile point 500 m west using ArcMap

I am a novice to ArcMap 10. I have this 2000 survey points shapefile and I was told to, I guess is dislocate, generate new survey points, each new should be 500m west and 500m south from the original ...

Lena marques

41

asked Aug 21, 2015 at 10:55

40 votes

9 answers

34k views

Creating shapefile showing footprints of Rasters?

I have around 1,000 satellite images in tiff format, and I want to create a shapefile which will serve as an index to the rasters. This is something similar to a raster catalog, but I do not want to ...

Devdatta Tengshe

41.6k

asked Jun 6, 2012 at 6:35

37 votes

5 answers

144k views

Extract Raster Value into Polygon Attribute

I have Raster Data for a State which has Elevation Data in its pixels. I also have Vector layer which has the 300 divisions of State. what I need is, I want to get the average elevation value of ...

Mahesh

755

asked Nov 7, 2012 at 13:25

22 votes

3 answers

14k views

Performing Raster Noise Reduction and Edge Smoothing?

I have a raster image like this I want to delete the isolated noise point and smooth the edge (say the white single points, and I want the edges of the entity look smooth). How can I do this in ...

Seen

2,215

asked Nov 14, 2012 at 5:54

13 votes

2 answers

2k views

Can labels for overlapping points be combined/merged into one label?

I have points representing sample locations. Often, multiple samples will be taken in the same location: multiple points with the same location but different sample IDs and other attributes. I'd like ...

Dan C

12.3k

asked Jul 28, 2015 at 16:22

9 votes

1 answer

4k views

Symbolizing using RGB values from Excel in ArcMap

I have an Excel file with 2 attribute columns, 1-feature info 2-Number of color (RGB) that the current feature should be symbolized with. This file can be joined with the layer using the "feature ...

Shefqet LULJA

1,179

asked Nov 26, 2014 at 20:20

8 votes

4 answers

19k views

Automatically update field value in one column based on change to another column in same table?

When editing I want to be able to change the attributes of one field and upon doing this allow for the automatic update of another field in the same attribute table. Essentially I have one layer ...

user10354

81

asked Sep 20, 2012 at 17:03

2 votes

1 answer

2k views

Splitting all polygon features in a shapefile into smaller equal width polygons

I have a shapefile of thousands of polygon features, that i would like to break up into smaller pieces (i.e. break a square into 8 equal pieces). I have read all over these boards for the right ...

Alec

21

asked Aug 25, 2015 at 18:21

2 votes

2 answers

4k views

Tobler's hiking function in PathDistance ArcGIS 10.3.1

I am working on least cost paths for an archaeological project and I am trying to implement Tobler’s hiking function on ArcGIS 10.3.1 for Desktop. I am using SRTM 1 arc second global downloaded on ...

user44169

37

asked Apr 19, 2016 at 13:17

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