Plotting a 2-d graph

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!

Answer 1

[ANKUR KUMAR]

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')

[Wafa'a Shanti]

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]

If you have created array, then use

contourf(timearray1{1},z1{1}, Temp1{1})

[Wafa'a Shanti]

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]

If your problem is not resolved yet, then please provide your program, so that we can help you.

[Wafa'a Shanti]

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