how to plot a quiver arrow with a point, direction and length!?

I have a robot with sensors. These sensors can detect obstacles right in front of the sensor instead of a radius around it. So, I am trying to use the sensor location, robot orientation and the sensor detection range. How can I do that with quiver command?

[the cyclist]

Can you upload the data you have for location, orientation and range, or at least a small sample? You can use the paper clip icon in the INSERT section of the toolbar.

Answer 1

[Aditya]

Hi Mohammadreza,

I understand that you want to plot a quiver arrow with the sensor location, robot orientation and sensor detection range.

To achieve this, you can use the following code snippet:

sensorLocation = [0, 0];  % Sensor location (x, y) 
robotOrientation = 30;  % robot orientation angle in degrees 
sensorDetectionRange = 5;  % Sensor detection range (length of arrow) 

% Convert robot orientation from degrees to radians 
robotOrientationRad = deg2rad(robotOrientation); 

% Calculate the end point of the sensor detection range arrow 
sensorEndX = sensorLocation(1) + sensorDetectionRange * cos(robotOrientationRad); 
sensorEndY = sensorLocation(2) + sensorDetectionRange * sin(robotOrientationRad); 


% Plotting the sensor detection range arrow 
quiver(sensorLocation(1), sensorLocation(2), sensorEndX - sensorLocation(1), sensorEndY - sensorLocation(2), 'b', 'LineWidth', 3); 

• In the above code, we have first defined the sensor location, robot orientation, and sensor detection range.
• The “quiver" function is then used to plot the arrow.
• The arrow originates from the point defined by “sensorLocation(1)” and “sensorLocation(2)”.
• It extends horizontally according to “sensorEndX - sensorLocation(1)” and vertically according to “sensorEndY - sensorLocation(2)”.
• The “color” of the arrow is set to “blue”, and the “line width” is set to “3”.

Refer to the below link for more information on the “quiver” function:

• https://www.mathworks.com/help/releases/R2022b/matlab/ref/quiver.html

Hope this helps!