how can I plot an array by array?

2 次查看（过去 30 天）
Moj
Moj 2014-12-12
回答： Image Analyst 2014-12-12
Dear community,
I want to plot an array by array but I don't know how to do this. x and y are 1 * 300 arrays.
for i = 7e-5:1e-5:3e-4
x(1,:) = 1 + 2*i;
y(1,:) = 3 + i;
end
plot(x,y)
how can I plot this easy problem?
  1 个评论
Guillaume
Guillaume 2014-12-12
Can you explain better what you're trying to do?
Note that if x and y are 1*300 arrays, your loop is equivalent to:
i = 7e-5:1e-5:3e-4 %24 elements
x(1:24) = 1 + 2*i
y(1:24) = 3 + i
That is, you're replacing the first 24 elements of x and y.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Thorsten
Thorsten 2014-12-12
val = 7e-5:1e-5:3e-4;
for i=1:length(val), x(i) = 1 + 2*val(i); y(i) = 3 + val(i);end
plot(x,y)
  1 个评论
Guillaume
Guillaume 2014-12-12
So Moj, if that's what you were looking for, what does the x and y are 1 * 300 arrays has to do with it.

请先登录，再进行评论。

更多回答（1 个）

Image Analyst
Image Analyst 2014-12-12
Assuming you want to do 300 values, I think the most MATLAB-ish way is this vectorized way:
% Define values
values = linspace(7e-5, 3e-4, 300) % 300 elements
% Create x and y vectors from those values.
x = 1 + 2 * values
y = 3 + values
% Plot y vs. x.
plot(x, y, 'b-', 'LineWidth', 2);
% Make the plot fancy.
grid on;
fontSize = 30;
title('y vs. x', 'FontSize', fontSize);
xlabel('x', 'FontSize', fontSize);
ylabel('y', 'FontSize', fontSize);
% Enlarge figure to full screen.
set(gcf, 'Units', 'Normalized', 'OuterPosition', [0 0 1 1]);
% Give a name to the title bar.
set(gcf, 'Name', 'Demo by ImageAnalyst', 'NumberTitle', 'Off')

类别

在 Help Center 和 File Exchange 中查找有关 Title 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by