Quiver Plot over Binary map

7 ビュー (過去 30 日間)
Yogang
Yogang 2022 年 6 月 14 日
コメント済み: KALYAN ACHARJYA 2022 年 6 月 18 日
I have a binary image of the coastline and would like to plot quiver (representative of wind) on the top of the binary map. The issue I am having is:
(1) How to plot vectors on the water area by extracting the features between land and water?
(2) How to finally get a combined image comprising of vector and binary data?
My current code is here:
im = imread('Genova_Binary.tif');
Error using imread>get_full_filename
File "Genova_Binary.tif" does not exist.

Error in imread (line 371)
fullname = get_full_filename(filename);
[x,y] = meshgrid(-2:.2:2,-1:.15:1);
z = x .* exp(-x.^2 - y.^2); [px,py] = gradient(z,.2,.15);
quiver(x,y,px,py); axis image %plot the quiver to see the dimensions of the plot
hax = gca; %get the axis handle
image(hax.XLim,hax.YLim,im); %plot the image within the axis limits
hold on; %enable plotting overwrite
quiver(x,y,px,py) %plot the quiver on top of the image (same axis limits)

回答 (1 件)

KALYAN ACHARJYA
KALYAN ACHARJYA 2022 年 6 月 14 日
編集済み: KALYAN ACHARJYA 2022 年 6 月 14 日
im = imread('Genova_Binary.tif');
[x,y] = meshgrid(-2:.2:2,-1:.15:1);
z = x .* exp(-x.^2 - y.^2); [px,py] = gradient(z,.2,.15);
quiver(x,y,px,py); axis image %plot the quiver to see the dimensions of the plot
hax = gca; %get the axis handle
image(hax.XLim,hax.YLim,im); %plot the image within the axis limits
hold on; %enable plotting overwrite
quiver(x,y,px,py) %plot the quiver on top of the image (same axis limits)
Please ensure "Genova_Binary.tif" must be in currunt working directory.
  2 件のコメント
Yogang
Yogang 2022 年 6 月 14 日
I am already having the working code here for the above plot but my question is :
(1) How to plot vectors on the water area by extracting the features between land and water? So I just want the vectors over water area not over land.
KALYAN ACHARJYA
KALYAN ACHARJYA 2022 年 6 月 18 日
Can it be done segmentation in particular water area only (after quiver plot)? Is that OK?

サインインしてコメントする。

カテゴリ

Help Center および File ExchangeVector Fields についてさらに検索

製品


リリース

R2022a

Community Treasure Hunt

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

Start Hunting!

Translated by