Create Color map on a figure

I have designed a foot insole containing pressure sensors, and imported it as DXF file in MATLAB. The pressure sensors will show different values (varying with time). According to the values shown, I want to generate a color coded output on the foot which is dynamic in nature. How do I go about doing this?

Answer 1

[Abhinaya Kennedy]

Hi Huy,

To visualize dynamic, color-coded pressure distributions on a foot insole design imported from a DXF file in MATLAB, follow these steps:

Step 1: Import the DXF File

Convert your DXF file to an image or a set of coordinates that MATLAB can process. For an image:

footInsole = imread('footInsole.png'); % Adjust file path
imshow(footInsole);

Step 2: Define Sensor Locations and Simulate Values

Map sensor locations to the insole representation and simulate or fetch dynamic sensor values:

sensorLocations = [x1, y1; x2, y2; ...]; % Sensor locations
sensorValues = rand(size(sensorLocations, 1), 1); % Dynamic sensor values

Step 3: Create Dynamic Color-Coded Visualization

Use a scatter plot for dynamic updates, with point colors representing sensor values:

figure;
hold on;
imshow(footInsole); % Insole background
for t = 1:100 % Example loop for dynamic updates
    sensorValues = rand(size(sensorLocations, 1), 1); % Update sensor values
    scatter(sensorLocations(:,1), sensorLocations(:,2), 100, sensorValues, 'filled');
    colormap('jet');
    caxis([minValue maxValue]); % Consistent color scale
    drawnow;
    pause(0.1); % Adjust as needed
end
hold off;

Replace "minValue" and "maxValue" with the actual range of your sensor data. Adjust the loop and pause duration according to your requirements for real-time or simulated data updates.

Hope this helps!