Removed chatting
Source Link
MrXsquared
  • 21.5k
  • 11
  • 43
  • 73

All the tips were very helpful, thank you very much!!! I was having the same problem with the Convex Hull tool. Phil, about your goal, youYou can do it using the tip that Oulala gave, but in order to have a single minimum convex polygon covering only the outermost points, you just need to let the 'Field' option (in the Minimum Bounding Geometry) empty. I was able to get this result with my points data. I have several species, and if I specify on the 'Field' option that I want a polygon to each one of them (putting the colunm of my attribute table that contains the species name specified on this option), then I had it... but when I let this option empty, without any specifications, I had only one polygon that covered all points as result.

Also, if you need several polygons according with your specifications, you can find the results on the attribute table for the definition you choose and classify the different polygons in the layer properties, with the option 'categorized', assigning different colors for each polygon.

I hope this can help.

All the tips were very helpful, thank you very much!!! I was having the same problem with the Convex Hull tool. Phil, about your goal, you can do it using the tip that Oulala gave, but in order to have a single minimum convex polygon covering only the outermost points, you just need to let the 'Field' option (in the Minimum Bounding Geometry) empty. I was able to get this result with my points data. I have several species, and if I specify on the 'Field' option that I want a polygon to each one of them (putting the colunm of my attribute table that contains the species name specified on this option), then I had it... but when I let this option empty, without any specifications, I had only one polygon that covered all points as result.

Also, if you need several polygons according with your specifications, you can find the results on the attribute table for the definition you choose and classify the different polygons in the layer properties, with the option 'categorized', assigning different colors for each polygon.

I hope this can help.

You can do it using the tip that Oulala gave, but in order to have a single minimum convex polygon covering only the outermost points, you just need to let the 'Field' option (in the Minimum Bounding Geometry) empty. I was able to get this result with my points data. I have several species, and if I specify on the 'Field' option that I want a polygon to each one of them (putting the colunm of my attribute table that contains the species name specified on this option), then I had it... but when I let this option empty, without any specifications, I had only one polygon that covered all points as result.

Also, if you need several polygons according with your specifications, you can find the results on the attribute table for the definition you choose and classify the different polygons in the layer properties, with the option 'categorized', assigning different colors for each polygon.

Source Link

All the tips were very helpful, thank you very much!!! I was having the same problem with the Convex Hull tool. Phil, about your goal, you can do it using the tip that Oulala gave, but in order to have a single minimum convex polygon covering only the outermost points, you just need to let the 'Field' option (in the Minimum Bounding Geometry) empty. I was able to get this result with my points data. I have several species, and if I specify on the 'Field' option that I want a polygon to each one of them (putting the colunm of my attribute table that contains the species name specified on this option), then I had it... but when I let this option empty, without any specifications, I had only one polygon that covered all points as result.

Also, if you need several polygons according with your specifications, you can find the results on the attribute table for the definition you choose and classify the different polygons in the layer properties, with the option 'categorized', assigning different colors for each polygon.

I hope this can help.