translation matrix in OXY plane

Let's say: I have matrix A=[x y z] with ~3.000 point data . Please see attachment file, and figure:

My question is: how can I translate all points with distance 1 in the black arrow direction (// with the long edge of the points), as illustrate figure?

Answer 1

[KSSV]

You need to add that value to the coordinates. If you want to move along x-axes add 1 unit to x coordinates.

data = importdata('A.txt') ;
x = data(:,1) ; 
y = data(:,2) ; 
z = data(:,3) ; 
plot3(x,y,z,'.r')
hold on
%% Translate along x axis by unit 1
dx = 1. ;
x = x+dx ; 
plot3(x,y,z,'.b')
view(2)

[ha ha]

Thanks @ KSSV

I hope my translation points is move along the direction parallel with the long edge of the rectangle (NOT ranslate along x axis)

[KSSV]

YOu need to split that into two components...and add that to every point along x and y.

[KSSV]

data = importdata('A.txt') ;
x = data(:,1) ; 
y = data(:,2) ; 
z = data(:,3) ; 
plot(x,y,'.r')
hold on
%% 
idx = boundary(x,y) ;

p = polyshape(x(idx),y(idx)) ;
v = p.Vertices(1:2,:) ;

v = diff(v) ;

u = -0.1 ;  % move by this unit 
x = x+u*v(1) ; y = y+u*v(2) ;

plot(x,y,'.b')

[ha ha]

Thanks @ KSSV .

You are correct.