New answers tagged attribute-table
You are right, this is not related to the question I asked in the first place. What I had in mind will not work. I opened a new question and asked again. Thank you! Also thanks for the hint with the comments! EDIT: I will accept this answer to close the topic in 5 hours…
In QGIS open your attribute table and click the "Select Features Using an Expression" button. To find all the null records for a field in a shape file your query will look like: "field_name" is null You can find your field name in the Fields and Values list, double click the field you want to get it into the Expression box. Once you have selected the ...
In ArcGIS the simplest way is to select all records with Null value, then in Field Calculator set them to 0. Not sure in QGIS or other software.
This calls for a Entity–attribute–value (EAV) data model. There are many negatives to using this data model, but in cases like this, it is the only option. The basic theory is that you have a table with the fixed attributes, and you have an additional table to store the additional(variable) attributes. In your case, the main table cane be something like: ...
The solution to this problem is to multiple your grid by 100 to move the digits to the left of the decimal point. I suggest 100 as your example are to 2 decimal places, if it were 3 then you multiple by 1000. After the multiplication you may need to run your dataset through the INT tool to make sure it is converted to an integer grid. Do your analysis then ...
It is explained here: Build raster attribute table (Data management)
I just did a quick test of creating a shapefile and then used ArcMap 10.2 to access the Metadata tab of Customize | ArcMap Options where I set the Metadata Style to ISO 19139 Metadata Implementation Specification (but the other choices are likely to behave similarly). In the Catalog window I accessed the Item Description of the shapefile and clicked Edit to ...
I solved this problem for a particular case. I had joined a .csv file to a .shp file and exported the data. I was getting the Rural_I_1 problem described above ... it was appending the file name of the .csv to the field names. My work around was to first export the .csv file as a .dbf table (from arcgis). Then do the join on the .dbf rather than the .csv. ...
If you want to edit your DXF file, use a Cad program. Many software versions are free, DraftSight, AutoCAD360, doubleCad, NanoCAD, etc.
In ArcMap a DXF file is read only so you need to export it, there is no alternative. Use the CAD to Geodatabase tool.
More elegent is "Classes" in ('14','15',....)
You would need to break up your selection statement into two separate parts: "Classes" = '14' AND "Classes" = '07' Although I'm guessing that you would want to use an OR case rather than AND for this query to work properly.
Referring to the comment of @GeoKevin try this: Add field (densitiy) to your polygon feature class (Resid). Join your two tables Use field calculator to calculate the field density. Field calculator will has access to both tables (Resid and Occupied)!
Not as far as I know. I think it will be most direct to add a text/label box above each of the tables, where you manually enter the layer name.
Export the joined table into a new shapefile or feature class, and then add the new field.
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