1

Problem: when I add a point-feature to a vector layer it doesn't appear where it is supposed to.

Here's what the process looks like:

  1. I create a vector Shapefile with point as a geometry type and add two fields (one for North coordinate and one for East coordinate). Field type: Whole number. I apply the same CRS (SWEREF99 TM) as the project has.

  2. I turn on toggling for the layer and click on "Add point feature".

  3. I click on a random spot on the map and enter the coordinates which I have gathered from a website. The website is a local (Swedish) equivalent of Google Maps. I use it because It provides coordinates for SWEREF99 TM CRS.

  4. I insert the coordinates and the point does not land on the spot where it should, rather in the vicinity of it. I even downloaded a georeferenced (SWEREF99 TM) satellite photo of the area and hovered over the spot where the point should be and noted the coordinates. Then I inserted those coordinates into this vector layer and still the point ends up in the wrong place. No matter which way I do it, it always appears in the wrong place, we are talking ca 2 to 10 cm off every time. I even tried inserting North coordinates into East coordinate field and vice versa but nothing works.

Viktor Sulakvelidze-Skantz
  • 91
  • 6
  • 1
    1: You create a "vector Shapefile with point as a geometry type", but then you "click on Add line feature": that cannot work. On a point layer, you have only points, on a line layer only lines. 2: you enter values for coordinates wehre: in the attribute table? That's not how creating geometries work - have a look at this tutorial for the basics: https://youtu.be/kCnNWyl9qSE 3: 2 to 10 cm accuracy looks quite good in my opinion - it always depends how much digits you use. So please add more information about what you do and best also add a screenshot. Your problem is not clear to me. – Babel Apr 03 '21 at 19:30
  • Oh, my bad. I meant to type "Add point feature". 2. After you click on the "Add point feature" and then click on a random spot on the map then a dialogue window pops up where you enter the coordinates. I do not enter the coordinates in the attribute table. I know that's not how it works. 3. I enter all of the digits. Screenshots of what is it that you would like to see?
    • – Viktor Sulakvelidze-Skantz Apr 03 '21 at 19:41
  • 1
    You create two fields and then enter the coordinates when you click on the map: that's exactly adding your coordinate values as attributes. That's not how it works: the geometry will be placed where you click on the map, not where you enter your data. You could however create geometries (see https://gis.stackexchange.com/a/392619/88814) using make_point (x,y). But much better: prepare a csv table with your data and load that to QGIS. There are a lot of explanations online for that, the first I found is this: https://www.hatarilabs.com/ih-en/how-to-import-spreadsheet-data-into-qgis – Babel Apr 03 '21 at 19:45
  • Ok. I understand. Thanks so much for bringing some clarity. Have a good day/night! – Viktor Sulakvelidze-Skantz Apr 03 '21 at 19:47