how can i change seabed color in acoustic channel

hello,

I am plotting an acoustic channel for transmission loss, but rock and bed color is blue or similar high color in color bar. it must be black or brown. how can i change it to black or brown color? Can anyone guide me?

thank you.

Answer 1

[Image Analyst]

% Plot in black
plot(x, signal, 'k-', 'LineWidth', 2);
% Or to plot in brown
brown = [96, 57, 19] / 255;
plot(x, signal, '-', 'Color', brown, 'LineWidth', 2);

[mo so]

thanks for your answer, but I want to change the color of the seabed not the signal.

[Image Analyst]

I'm sorry -- did you show us anything yet? It seems you forgot to attach your plot or image.

TUTORIAL: How to ask a question (on Answers) and get a fast answer

[mo so]

oh, yes. I'm sorry. I forgot. Corrected now.

[Image Analyst]

OK, you're talking about displaying images, not plotting. You display or view an image, not plot it. You plot graphs, curves, lines, etc.

What values are those things you're pointing to? You can just set the bottom of the colormap to brown, like

% Make a colormap of 256 rows.
cmap = parula(256);
% Set darkest 20 rows to brown.
brown = [96, 57, 19] / 255;
cmap(1:20, :) = brown;

[mo so]

Thank you. It did'nt work for me.

[Image Analyst]

How can I help you?

Here's how you can help me help you:

TUTORIAL: How to ask a question (on Answers) and get a fast answer

I'll check back later for your image.

[mo so]

Thanks for your help. I changed range of color and type of cmap. but floor is same max color and it has very bad color. In act, the floor must be min color and be clear as a topography. But it is the same color as the environment!!

[Image Analyst]

No - that's not the image I need. I need the gray scale image, not the pseudocolored image as a screenshot.