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I am wondering what I would need to do in order to import a CSV file and then combined that with an existing layer.

I would like to know which boxes I need to check in order to make this combine with another layer.

If you could also walk me through the step by step procedures if we need to write any expressions in the field calculator that would be great.

If it helps I downloaded the original Layer with all the Data points on it and then Added a field and would like to re-add it into QGIS.

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    Can you give examples of your data?
    – Matt
    Commented May 27, 2016 at 13:22
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    I think this depends on how your data is stored in your csv. E.g. which delimiters are used (commas, tabs, spaces...); are column names present and if so, which row are they in; if there's geometry stored, how are they stored (are they point coordinates using XY coordinates), lines or polygons using WKT format, or no geometry at all (just an attribute table). Quite a lot of factors involved but there is a preview window which shows how your data will be represented with the selected options. If it looks right then try to add it =)
    – Joseph
    Commented May 27, 2016 at 13:23
  • You don't join data in the CSV importer. Perhaps you need two question instead of one. In the CSV importer just hit all the checkboxes depending on you delimiter, till you are happy with the result. You can join under under properties to another layer.
    – Jakob
    Commented May 27, 2016 at 13:28
  • I have 5 different columns, Each has a name at the top which is the Field. When I exported the original document from Qgis it had coordinates, but I believe that I only exported the Attributes. The delimiter is commas.
    – Micklus
    Commented May 27, 2016 at 13:32
  • I guess my main question is; How do I join a Attributes only layer with one that has Geometry in it.
    – Micklus
    Commented May 27, 2016 at 13:35

1 Answer 1

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In QGIS, right-click on a layer with geometry and go in Properties. There, click on the Joins tab on the left (it looks like an arrow with a dot). Then click on + and chose the layers and fields on which you want to do the Join.

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