Saving Images Captured by Raspberry Pi Camera

Hi I want to have a standalone code on Raspberry Pi generated from a matlab function that takes images evey one second and save them in a directory of my Raspberry Pi... but in many websites they say that the captured image must be returned to host computer... How can I make it standalone?

function CaptureImage()
%#codegen
%Create raspi & webcam obj
raspiObj = raspi('192.168.1.101','pi','pi');
cam      = webcam(raspiObj,1);
% Main loop
start = tic;
fprintf('Entering into while loop.\n');
while true
    elapsedTime = toc(start);
    %Process frames at 1 per second
    if elapsedTime > 1
        %Capture image from webcam
        img = snapshot(cam);
        %what should I add here to save captured image in Raspberry Pi
        start = tic;
    end
end
end

[Walter Roberson]

When I look at https://www.mathworks.com/help/supportpkg/raspberrypiio/ug/functions-supported-for-deployment.html it appears to me that the functions you are using should create img in the memory of the Raspberry Pi.

Deployment to the Raspberry Pi is relatively new; perhaps those sites were out of date.