0 个投票

Is it possible to make a plot with three variables, but using only ta 2-D plot? For instance, I want the x-axis to be time, y-axis to be height, and the independent variable to be temperature. I haven't found anything online that would hint at a possibility, but thought it wouldn't hurt to ask. Thanks!

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ANKUR KUMAR
ANKUR KUMAR 2017-12-27

1 个投票

If you want to use 3 variables on 2D plot, then you can use contour or contourf or surf or surfc.
clc
clear
lat=(1:10)';
lon=(1:20)';
rf=randi(20,10,20);
figure()
contourf(lon,lat,rf,'linecolor','none');
figure()
[x,y]=meshgrid(lon,lat);
a=surf(x,y,rf,'FaceAlpha',0.5,'EdgeColor', 'none')
figure()
surfc(x,y,rf,'FaceAlpha',0.5,'EdgeColor', 'none')

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Wafa'a Shanti
Wafa'a Shanti 2017-12-29
Thank you for this. Now when using imported data, I created arrays for each of the variables: timearray, z, Temp. I put these variables into a contourf plot,
contourf(timearray1,z1, Temp1)
and the error received is:
Input arguments must be numeric or objects which can be converted to double.
Each variable is a list of numeric values, so the error lies in the object possessing the ability to convert to a double. What does that mean exactly?
ANKUR KUMAR
ANKUR KUMAR 2017-12-30
If you have created array, then use
contourf(timearray1{1},z1{1}, Temp1{1})
Wafa'a Shanti
Wafa'a Shanti 2017-12-30
Cell contents reference from a non-cell array
This is what I receive when I do this. I have used table2array function to convert each column in the data table imported to an array. I tried to use (1) instead, and received the same error message as before (which after reading online, makes sense why it would produce such error).
ANKUR KUMAR
ANKUR KUMAR 2017-12-30
编辑：ANKUR KUMAR 2017-12-30
If your problem is not resolved yet, then please provide your program, so that we can help you.
Wafa'a Shanti
Wafa'a Shanti 2017-12-30
As a forewarning, there are two different sets of data from two different schools. Each one has about 25 tables I had to import and convert to arrays, which was done by simply changing the number located next to the variables.
First set of data:
datapath1='C:\Users\Faye\Documents\MATLAB\xq_directDownWashf12.csv';
formatspec='%f%f%f%f%f%f%{MM-dd-yyyy HH:mm:ss}D%{MM-dd-yyyy HH:mm:ss.SSSSSS}D';
NumericValueTable1=readtable(datapath1,'Delimiter',',','HeaderLines',0,'Format',formatspec);
Pulldataout1=NumericValueTable1(:,1:6);
UASdata1=table2array(Pulldataout1);
timearray1=table2array(NumericValueTable1(:,7));
Temp1=table2array(NumericValueTable1(:,2));
z1=table2array(NumericValueTable1(:,4));
second set of data:
datapath1='C:\Users\Faye\Documents\MATLAB\OSUr1.csv';
NumericValueTable1=readtable(datapath1);
pulloutdata1=NumericValueTable1(:,[2 1]);
OSUdata1=table2array(NumericValueTable1(:,[3 2]));
data1=num2str(OSUdata1);
OSUd1=datetime(data1,'Inputformat','yyyyMMdd HHmmss');
OSUd1=datestr(OSUd1);
NumericValueTable1.class=OSUd1;
writetable(NumericValueTable1,'OSUr1.csv','Delimiter',',','Quotestrings',false);
datapat1='C:\Users\Faye\Documents\MATLAB\OSUr1.csv';
NumericValueTable1=readtable(datapat1);
Newdata1=NumericValueTable1(:,(3:9));
OSUdata1=table2array(pulloutdata1);
timearray1o=table2array(NumericValueTable1(:,1));
Temp1o=table2array(NumericValueTable1(:,8));
Tempp1=Temp1o/100;
z1o=table2array(NumericValueTable1(:,6));
zo1=z1o/100;
The goal is to contour, like stated before, the time, height (z), and temp/tempp

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