Error Plotting values from a struct with fields

Greetings,

I have been playing with another Trial of Matlab. I decided to try to make an HTTP request and get the data back and plot it.

Solar API Request

This script will recieve data from the National Renewable Energy Labrabtory.

Application Interface

So here we pass:

API Key

API Endpoint related to solar data

nrel = 'https://developer.nrel.gov/'
uri = 'api/solar/solar_resource/v1.json?'
key = 'api_key=GetYourOwnKey'
lat = '&lat=37'
lon = '&lon=-97'

solarData = webread(strcat(nrel,uri,key,lat,lon));

This works just fine (I think). So what is returned is a 1x1 Struct with nested structs inside of it.

So the data I need is outputs:

And finally one more level down:

So as you can see, the struct here has 12 fields with values. When I try to plot it, I get errors. I need help understanding how to plot the montly names along the x axis and the values along the y axis. Any help?

Cheers

Answer 1

[Walter Roberson]

values = structfun(@(x) x, solarData.outputs.avg_dni.monthly);
names = fieldnames(solarData.outputs.avg_dni.monthly);
plot(values);
xticks(1:length(values));
xticklabels(names);

[XPX Labs]

Brilliant!

Thank you

Answer 2

[Bruno Luong]

plot(struct2array(solarData.outputs.avg_dni.monthly))

You can do the label using Walter's solution