A tabular set of data linked one-to-one to a set of spatial features.

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115 views

How to concatenate XY values in attribute table without messing up the numbers in ArcGIS 10.1?

Here's the procedure I use and the resulting problem I'm having. First I use the Add XY coordinates tool to add POINT_X and POINT_Y fields to the attribute table of a point layer. I then add a new ...
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1answer
68 views

How to solve 'syntax error, unexpected LE' in QGIS query builder?

I have a very simple question about the advanced query builder in QGIS. I'd like to search for a range of numerical data values in the attribute table, but asking QGIS to show me values that are ...
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0answers
63 views

How do I merge US counties consistently?

I am new to QGIS. My project involves county-level data. The problem is that US counties keep changing! (See the US Historical Counties project: http://publications.newberry.org/ahcbp/) Since my ...
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0answers
82 views

Attribute table in Map Composer has no content QGIS 2.0 [duplicate]

I make a QGIS Plugin and I try to use the map composer to print a .pdf Map. In this Map I like to display the attribute table of a layer. I load it in with: vLayer = ...
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2answers
44 views

How to flag parcels as being within stop type dependent distance of transit stops?

first question here! I have a parcel layer and a transit stop layer. The transit stop layer has different bus stops, light rail stops, etc. I want to add to my parcel layer attribute table fields ...
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2answers
1k views

ArcObjects: How to insert data into a table?

I have a table in ArcCatalog named WorkOrderAss. This table contains 3 columns: (OBJECTID, FeatureName, Name). I want to insert data to this table from the code behind in C#. Any help would be ...
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0answers
63 views

Convert pixel value histogram to table

I am working in QGIS 2.1 with the National Land Cover Database 2006 land cover layer. It is a raster layer with pixel values corresponding to different land cover types. I have clipped this raster to ...
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0answers
53 views

Copying an entire column between layers (tables)

I have a raster layer with probabilities as values and I process them using the Spatial Analyst extension. After the processing the values are modified, however I would like to also have the original ...
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2answers
136 views

ArcGIS Find and Replace attribute search error

I am editing a vector layer in ArcMap 10.1 in the attribute table the no data value for some of my fields is -1.7976931348623157e+308. I would like to replace that with 0. I attempted to use the Find ...
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2answers
368 views

How to delete multiple fields in an attribute table?

Is there a way to select multiple fields in an attribute table and delete them together in Arcmap without writing the script?
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1answer
1k views

How to change field formats in ArcGIS 10.1 geodatabase? [duplicate]

I am working with data in an ArcGIS 10.1 geodatabase. I wanted to complete the simple task of taking a ten-digit ID field that is currently in String/Text format and create an identical field in ...
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1answer
63 views

ArcGIS - Cell Content Deletion

I have a really simple question I can't find the answer to. I'm looking to delete a range of values from an attribute table in ArcGIS 10. I'm looking for a quick way to delete about 3000 records. The ...
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1answer
98 views

How to merge polygons into a single item where an attribute is same?

I have a shapefile of a area .It consists of list of fields in which sub locality is also a field.Under the sub locality field all the areas are common say for example: perungudi,perungudi,perungudi. ...
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2answers
95 views

Attribute Table Doubt in Qgis

I am having a shape file which consists of various fields for example: shape area ,shape length, locality, sub-locality,district etc.In my company they are demanding seprate shapefiles say for example ...
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2answers
274 views

ArcMap attribute table has disappeared [duplicate]

I am having the same problem discussed here:. I don't know what I did but my attribute table is now lurking somewhere but I can't find it. I use only one monitor. The previous question was resolved ...
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4answers
87 views

Add only unique features from another shapefile

I've got a problem that I am sure at least one of you have dealt with. I'm new to a company that makes use of a rather large database of point data. For whatever reason, the woman who was here before ...
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0answers
201 views

How to calculate the distance to multiple locations from each cell of my raster?

I'm working with Arcgis 10.1 and Python 2.7.2 How can I calculate the distance to multiple locations from each cell of my raster? I tried euclidean distance but it only provides the distance to ...
2
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1answer
67 views

Why do edits made in attribute table not show in associated layer? QGIS 1.8.0

I have compiled a heat map layer to display over a background raster map. I discovered that the heat map layer was incorrectly positioned because I had made an error in the coordinate entry fields of ...
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1answer
52 views

How to edit a table in GRASS?

How do I edit a table in GRASS? When importing a vector into GRASS from QGIS, all the attributes are lost and I need these to continue with my analysis.
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1answer
88 views

Stuck updating one field based on the condition of another using Acrpy or Field Calculator

I have a shapefile with 5,000 city points. I need to populate a new field, "cls_pop", based on each cities population, so that cities with a population > 2,000,000 will have "cls_pop" = 1, cites with ...
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0answers
38 views

Reading particular fields in attribute table and exporting it as a text file

I am having a shape file for which i created a polygon centro ids using qgis. When I open the attribute table it shows various fields such as shape area, shape length,unique id x coordinate and y ...
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1answer
143 views

How to automatically populate fields instantly?

I am looking to create an attribute table where the first field is a drop-down menu (I have achieved this by using the 'value map' edit widget), but I'm struggling to find a method for the next part; ...
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1answer
37 views

Integer field name changes automatically

Last week I had imported some shapfiles into file geodatabase. It makes sense but when I checked table of the outputs I had found that some integer field names had been changed to other names. For ...
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1answer
1k views

How to force ArcGIS to recognize a text field in a CSV file?

Related to Data-type detection in ArcGIS table loading I have a CSV file which contains a mixture of numeric and text fields: ID,Txt,Int,Dbl 12345,abc,45,56.78 12346,9,65,23.12 12347,10,66,23.13 ...
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1answer
122 views

How to convert a column of numeric IDs to letters?

I'm working with qgis 1.8.0. I divided a map into 500 features (small rectangles), and now I have the doubt if there is any way to change the ID of the attributes from numbers to letters? When I did ...
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1answer
91 views

QGIS Spatial Queries

I was wondering if I could do the following within QGIS: I want to update a column in my point layer with the attribute information from a specific column in a polygon layer - so I have a layer of ...
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1answer
76 views

How to add information to an attribute table?

I'm working with qgis 1.8.0 and did the following: 1.-Divided my shapefile into 830 features (small rectangles). 2.- Added to my shapefile several points containing weather information using the "add ...
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1answer
80 views

How do I add a lot of data to a shape file in QGis?

I have some nice shapefiles from Agesic in Uruguay, I need to add to them some information (not as shapefile) that I got from Dinamige to the attribute table. These institution are not the point, the ...
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1answer
226 views

ArcGIS Attribute table appears empty until features are selected

I have a multiple layers that show features in the data frame and the layers are editable and labeled, but when you open the attribute table for these layers, it's empty. The only way to get the ...
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0answers
103 views

How do I edit a shapefile DBF to repair an extra row?

Something got screwed up and now the rows of my DBF beyond #1210 are offset by one, meaning that each shape has the attributes that should be assigned to the next shape. If I were in a spreadsheet ...
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2answers
173 views

How to re-calculate area, perim, p2a,width and length in QGIS?

I cut a part out of one feature and added it to another feature in a polygon shapefile. My problem now is that both features has the same values in the area-, perim-, p2a-, width- and length-columns? ...
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1answer
47 views

How to work around “OGR-failure while deleting field 13. Invalid field index”?

this post might be related to this one: QGIS Field Calculator Results Removed When Saving Edits But there is no suitable answer for me It is not allowed to ask another time in the other post I ...
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2answers
116 views

How do I gather X and Y co-ordinate data from a vector grid overlay in QGIS 1.8.0?

I have overlaid a 10m x 10m grid onto a UK Ordnance Survey raster map. I have set both raster and vector maps to the same CRS, (OSGB 1936 British National Grid; ESPG:27700). I have a csv file ...
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1answer
55 views

Why are attributes missing in overlay tab QGIS 1.8.0?

I want to add a diagram overlay onto a shapefile layer. When I look at the attribute table, all the correct columns are shown. However, when I open the layer property box, the attribute columns I want ...
0
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1answer
70 views

Can this compilation and display of species frequency data be improved? QGIS 1.8.0

As a newbie on QGIS, I would like to find out if the way I put a species frequency map together could be improved upon. I had to map the presence or absence of 7 plant species surveyed in 30 2m x 2m ...
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1answer
559 views

How to delete a table field in ArcGIS?

I am trying to delete a table field: From ArcMap table view, I right click on the field heading and select Delete field. Unfortunately, I obtain the following message: Failed to delete the selected ...
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0answers
43 views

How can I display multiple categorized fields joined to the same shapefile layer in QGIS 1.8.0

I have multiple csv tables to display on the same shapefile grid layer. Using the properties box, QGIS allows me to add as many join tables as I like. The trouble is, each table needs to be ...
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28 views

how to divide a Area shapefile into multiple segment, so that each segment will be a seperate feature in attribute table? [duplicate]

I'm very new to GIS, I'm using QGIS and here's what I want to do: I have a shapefile of an area . I want to divide that area into multiple segment (not grid), so that each segment will be a ...
0
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1answer
64 views

Table calculation in QGis

I have a shape file with the attribute "yield". I need to know the math difference between yield (id1) and yield (id2)...then yield (id2) and yield (id3) and so on... I hope you understand what I ...
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3answers
660 views

How to store data from ArcGIS layer in SQL Server?

I'm new to ArcGIS and I want to know if I can store data from a layer to a SQL Server table and if we can do this, then how? I have already made a connection between ArcGIS and SQL Server.
5
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1answer
80 views

Is there an Attribute Table Feature limit?

I am copying a table with 11,000+ features but only about 700 show up on the QGIS attribute table. Is there a limit? how can I avoid this problem? Thank You in advance!
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1answer
96 views

ArcGIS 10 keeps putting space in table value, when nothing is wanted

I have a table with a row Page_Number_N some of the rows have values and others just have a space. For example record 4 is just a space. Field values are Strings. 1 2 3 5 When I start an edit ...
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0answers
120 views

Can i assign a list or array to IRowBuffer Row without Row.set_Value()?

Is it possible to assign a list or array to IRowBuffer Row? I have something like the following: I have a fields (list) with values and i have to fill a Row with that values. public void ...
5
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2answers
1k views

ArcGIS 10 Field Calculator doesn't notice selection/Attribute Table problem?

I just have an annoying problem with the Field Calculator in ArcGIS 10. I selected specific points of a Shapefile I want to calculate, but FC is always calculating all fields. Unfortunately there is ...
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1answer
976 views

Join Fields from Multiple Tables to One Table in Modelbuilder

I have 40 tables with about 2000 row with a shared ID that I want to merge into 1 table with 2000 rows. I only want to retain a distance field calculated within each table. The distance field is ...
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151 views

Can't order/sort String columns in ArcMap attribute table

I am new to this site as a registered user and new to GIS in general, and it has proven quite useful to me. I have a very annoying problem with the attribute table being filled by an ArcMap ...
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65 views

How to take point data from a network and input it as TO/FROM endpoint data in streets layer?

I am building a network of my city's roads in ArcMap 10.1. Right now I have three layers: 1) Streets_To-From (lines representing the southbound and westbound sides of every road and one-way streets ...
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0answers
195 views

Morphometric and hydrological analysis with Python and ArcGIS

How can I write a program using python, that calculates some morphometric and drainage indexes using numeric attributes in the attribute table with ArcGIS? The data I have in my table are area and ...
2
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1answer
143 views

How to split single lines to represent two-way streets?

I am working on a project using city road data. The data has every road in the city visualized as lines and with directional data stored in the attribute table (one-way to-from, one-way from-to, and ...
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1answer
90 views

How to hide/suppress and rename/alias fields when exporting to KML?

I have a feature class that needs to be exported to a KML file. I wonder if there is a way for me to export only some of the columns of the feature class's attribute table; some attributes are not ...