Items tagged with point


The representation of the tangent plane in the form of a square with a given length of the side at any point on the surface.

The equation of the tangent plane to the surface at a given point is obtained from the condition that the tangent plane is perpendicular to the normal vector. With the aid of any auxiliary point not lying on this normal to the surface, we define the direction on the tangent plane. From the given point in this direction, we lay off segments equal to half the length of the side of our square and with the help of these segments we construct the square itself, lying on the tangent plane with the center at a given point.

An examples of constructing tangent planes at points of the same intersection line for two surfaces.

I have to first plot the some point like (-1,4), (0,3), (1,4) etc. and then I wish to know how I can connect them with a line. 

Hello Guys,

I am having a problem plotting a graph from some sets of point. Please how do I plot a graph having some set of point.


I created a regular 2D without specifying the number of points. I tried to change its style from "line" to "point", but i cannot see the symbols because there are too many points and so all i see is a thick black line. Is replotting with less points the only way, or can I interactively reduce the number of points? 

Hi all, 


I was wondering if it is possible to add a colour gradient to a point plot to represent another perameter in the data.



For example, each point corresponds to a value of 'f' ranging from 0.1 to 1, and I was wondering how to display this by means of a colour gradient.




How can I add fixed point to the surface in 3 dimensions ?

Page 1 of 1