Azzera filtri
Azzera filtri

Plot line with points at given distance

4 visualizzazioni (ultimi 30 giorni)
Hi all,
I need to find a way to plot markers along a line (river course; attached file) with a given distance, e.g. each 500m.
Is there a way to extract these values. The find function does not work in this situation since I only get an empty double column vector. I've used the TopoToolbox before, so the dataset is a STREAMobj which might be diffucult to read for one who hasn't the toolbox installed.
I tried to plot new points with spacing, but since the river is not smoothed and also should not be, point spacing starts and every new edge.
hold on
spacing = 500;
In advance thanks for your help.
  4 Commenti
Voss il 18 Feb 2022
Ah, I see. I thought all the toolboxes were available here, so that's good to know.
Ricco Blass
Ricco Blass il 19 Feb 2022
Yes I updated my question. Should have mentioned that before.

Accedi per commentare.

Risposta accettata

Wolfgang Schwanghart
Wolfgang Schwanghart il 25 Feb 2022
Since you are working with TopoToolbox, you might want to use the function getlocation. If you have a STREAMobj S, then you can retrieve points at a distance of 500 m as follows:
DEM = GRIDobj('srtm_bigtujunga30m_utm11.tif');
FD = FLOWobj(DEM);
S = STREAMobj(FD,'minarea',1000);
S = klargestconncomps(trunk(S));
[x,y,val] = getlocation(S,[0:500:max(S.distance)]);
hold on
plot(x,y,'ok','MarkerFaceColor',[.5 .5 .5])
axis image

Più risposte (1)

Catalytic il 19 Feb 2022




Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by