Linked Questions

1
vote
2answers
3k views

How do I convert a STRING to a Real? [duplicate]

So I am trying to join some data I have (just numbers) to a map on QGIS. However it when I try to join the data to map it shows up as a string instead of a real. It's a just a normal exel file. I ...
2
votes
2answers
1k views

Why is QGIS reading in my CSV numeric data as string data, and how do I change it? [duplicate]

QGIS keeps reading in my numeric data from .csv files as string data. This means I have to figure out how to read it in with the proper data type, or convert it back to numeric inside of QGIS, ...
1
vote
1answer
409 views

How to prevent QGIS (MMQGIS plugin) from interpreting numbers as strings [duplicate]

I'm using the MMQGis plugin to "Join Attributes From CSV" into a shapefile and am having trouble getting QGIS to interpret some numbers as numbers (rather than strings which is what its doing). This ...
0
votes
1answer
210 views

Reading .csv file in QGIS [duplicate]

I am trying to join a .csv file with a .shp file in QGIS but QGIS is unable to read the data in my .csv file as it indicated that the variables are string of length and precision 0. As a result, I am ...
2
votes
0answers
103 views

Joined field not recognized as number in QGIS 2.4 [duplicate]

I have a weird problem. I've loaded in QGIS a point shapefile and a CSV table. Then I performed a join between the 2 layers and all works fine. But then the joined columns (made of integers or real ...
1
vote
0answers
24 views

QGIS 3.2 reading real number as string [duplicate]

I am attempting to import a CSV file as a delimted text layer that has decimal values into QGIS 3.2. Whenever I do so, instead of QGIS reading the decimal values as real or double, it reads them as ...
11
votes
3answers
37k views

Changing data type in attribute table in QGIS?

I have county data in which the FIPs (actually State FIPS and County FIPS combined). I have data imported as CSV with the sames FIPS data titled STCounty. However, the shapefile FIPS is listed as a ...
5
votes
4answers
9k views

How to install Python libs for XYtools to read Excel files

I need to use the XYtools plugin to read an Excel file. After choosing the XYtools incon and indicating an Excel file to read in, a message appears "there is a problem with loading a python module ...
2
votes
6answers
10k views

How to change a CSV layer attribute value from text to number - once again?

i have read most of the related postings and answers allready ... (e.g. http://anitagraser.com/2011/03/07/how-to-specify-data-types-of-csv-columns-for-use-in-qgis/ and Changing CSV layer attribute ...
8
votes
2answers
9k views

Table join with .csv file results in null fields after join

Similar to questions already asked about .dbf files, I'm attempting to join .csv files to a .gdb or shapefile coverage in QGIS. The tables as added to QGIS prior to the join look fine, but after the ...
8
votes
1answer
2k views

How to keep leading zeros in csv file when working with QGIS

I'm new to QGIS, and Geographic Information Systems in general, and also have no experience with informatics. I a have shapefile which works fine, and then I have a file in CSV format, and I try to ...
3
votes
3answers
1k views

Editing CSV tables in QGIS

I am trying to join a CSV table to a shapefile in QGIS 2.12.0. I have exported a table from Excel to CSV format, but when opening the table I noticed that my unique ID field in Excel is in text format,...
2
votes
2answers
2k views

Why do certain fields import as strings in QGIS?

I have imported a CSV to QGIS with lat/lon values representing points. The other fields, at least in the original CSV file, contain numeric values. > sapply(pune_hotspots, class) id ...
1
vote
1answer
3k views

Changing census income data from string to number in QGIS

I am trying to use Census Block group income data that I retrieved from American Fact finder. When I join the income data to the block group shapefile in QGIS it imports as a string. How can I ...
1
vote
1answer
1k views

How To Show Percentages By Coloring Polygons in QGIS?

I am trying to produce a map with QGIS that has counties shaded according to the percentage of people born in a US Region. For example, counties with a high percentage of people born in the South ...

15 30 50 per page