How can I plot three columns of a dataset to produce an image or a map?

Question

Stephen Tete 2023-3-24

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1934634-how-can-i-plot-three-columns-of-a-dataset-to-produce-an-image-or-a-map

评论： Stephen Tete 2023-3-24

采纳的回答： Joe Vinciguerra

I have the randomly generated data with the final dataset in the Variable 'DATA'

===========================================

D = [66;67;68;69;70;74;75;76;78;83];

Day =repelem(D,11);

timeH = (13:23)'; timeH = repmat(timeH,[10,1]);

xmin=0;

xmax=0.9;

n=110;

x = xmin+rand(1,n)*(xmax-xmin);

x = x';

DATA = [Day,timeH,x];

===========================================

I want to produce an image or map with x-axis Day, y-axis as timeH and z-axis as x.

I have tried with:

imagesc(Day,timeH, x)

but the output I'm getting is more of stripped color lines,

I want a map like the images attached (days on the x axis instead)

or

I would be grateful if i can get help. Thank you

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Joe Vinciguerra 2023-3-24

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1934634-how-can-i-plot-three-columns-of-a-dataset-to-produce-an-image-or-a-map#answer_1200464

在 MATLAB Online 中打开

The data needs to be reshaped.

Here are a few different plotting options, depending no how you went to represent the data.

D = [66;67;68;69;70;74;75;76;78;83];

Day =repelem(D,11);

timeH = (13:23)'; timeH = repmat(timeH,[10,1]);

xmin=0;

xmax=0.9;

n=110;

x = xmin+rand(1,n)*(xmax-xmin);

x = x';

DATA = [Day, timeH, x];

% Reshape the data into matrices

d = reshape(DATA(:,1), [11, 10]);

t = reshape(DATA(:,2), [11, 10]);

X = reshape(DATA(:,3), [11, 10]);

% plot as a scaled color image

imagesc(Day, timeH, X)

colorbar()

% plot as a scaled color image with interpolated visualization

imagesc(Day, timeH, X, "Interpolation", "bilinear")

colorbar()

% plot as a filled contour map

contourf(d, t, X, "LineStyle","none")

colorbar()

% plot as a 3D surface, viewed from top with interpolated shadind

surf(d, t, X, "LineStyle","none")

shading(gca, "interp")

colorbar()

view(0, 90)

axis tight

3 个评论
显示 1更早的评论隐藏 1更早的评论

Joe Vinciguerra 2023-3-24

If I understand you, something like xticks(66:83) or xticks(D).

Stephen Tete 2023-3-24

oh sure

请先登录，再进行评论。

How can I plot three columns of a dataset to produce an image or a map?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

采纳的回答

3 个评论
显示 1更早的评论隐藏 1更早的评论

更多回答（0 个）

另请参阅

类别

标签

产品

版本

Community Treasure Hunt

How can I plot three columns of a dataset to produce an image or a map?

0 个评论 显示 -2更早的评论隐藏 -2更早的评论

采纳的回答

3 个评论 显示 1更早的评论隐藏 1更早的评论

更多回答（0 个）

另请参阅

类别

标签

产品

版本

Community Treasure Hunt

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

3 个评论
显示 1更早的评论隐藏 1更早的评论