How do you find the coordinates of a point in Matlab?

Awesome I pretty much used a very simple formula which does the same thing you have listed above.

1. [x, ~] = ginput(1); %xmouse, ymouse.
2. [~, xidx] = min(abs(time-x)); %closest index.
3. xx = time(xidx); %extract.

How do you plot points on a graph in Matlab?

You can get the data from a plot by accessing the XData and YData properties from each Line object in the axes.

1. Make the figure containing the plot the current figure.
2. Call the gca command to get the current axes within that figure.
3. Get the coordinates from the XData and YData properties of the Line object.

How do you find a specific point on a graph in Matlab?

How to get the exact position of a plotted point?

1. hold on;
2. function getPoint(varargin)
3. currentPoint = get(gca, ‘CurrentPoint’);

How do you plot a point on a line in Matlab?

How to plot point x on a line

1. function[ x y]= test (x1,y1,x2,y2)
2. y=((-x1)+y1*(y2-y1))/(x2-x1);
3. x=((-y1*(x1-x2))/(y1-y2))+x1;
4. plot(x,y,’ro’)
5. end.

How do you find the coordinates of a point?

To Display the Coordinates of a Point

1. Click Home tab Utilities panel ID Point. Find.
2. Click the location that you want to identify. The X,Y,Z coordinate values are displayed at the Command prompt.

How do you plot points on a graph?

To graph a point, first locate its position on the x-axis, then find its location on the y-axis, and finally plot where these meet. The center point of the graph is called the origin and is written as the point (0, 0) because it’s located at the zero point on the x-axis and the zero point on the y-axis.

How do you plot in Matlab?

Creating a plot using commands

1. Type x = -pi:0.01:pi; and press Enter in the Command window. MATLAB generates a vector, x, and fills it with a range of data points for you.
2. Type plot(x, sin(x)), grid on and press Enter. This plot is a sine wave created by MATLAB using the input you provided.

Why do you not connect the dots on a scatter plot?

Scatter plots are similar to line graphs in that they start with mapping quantitative data points. The difference is that with a scatter plot, the decision is made that the individual points should not be connected directly together with a line but, instead express a trend.

What is coordinates formula?

y = mx + b. A horizontal line has gradient 0. In a horizontal line all points have the same y-coordinate, but the x-coordinate can take any value. The equation of the horizontal line through the point (0, 5) is y = 5.

What are the coordinates of point T?

The coordinates of point T are ​(0​,6​).

What is the formula to find the coordinates of a point?

The formula is known as the Section Formula. Let us begin! Consider two points P(x1, y1) and Q(x2, y2). We have to find the coordinates of the point R which divides PQ in the ratio m : n, i.e. PR / RQ = m / n.

How do you create a graph in MATLAB?

Steps Know a few things about MATLAB. Open MATLAB. Create a new Function file. Set up your Function file. Set up your data. Now set up your graph. Make sure the final line in your function file is “end” and save your file. Execute the function. View the results.

How do I plot data points in MATLAB?

Enter into the command window “plot(x, y, “.”) to plot the points. The “.” in the code places a “.” at each coordinate of the x-y matrix. For instance, a point will be placed at (1,2) and (2,4). Step. Click on the “Show Plot Tools and Dock Figure” in the figure menu to change the marker type.

What is a polar plot in MATLAB?

Polar Plots (with a little help from Matlab) Matlab provides functions that produce polar plots in appropriate coordinates using magnitudes and angles. The compass function takes its inputs in Cartesian format, but outputs polar plots.