adding python script to get average per date

.gitignore

@@ -2,4 +2,5 @@
 /TopTEENProgrammer/Topteen/build/
 /1er_Semestre/Sistemas Biologicos/40-100-100_data.npy
 /MLH/CursoUnity/
-/1er_Semestre/Modelacion_computacional_del_movimiento/Datos_proyectil.xls
+/1er_Semestre/Modelacion_computacional_del_movimiento/Datos_proyectil.xls
+/Competencias/Spark/Databases

1er_Semestre/Modelacion_computacional_del_movimiento/vectarrow.m

@@ -0,0 +1,77 @@
+function vectarrow(p0,p1)
+%Arrowline 3-D vector plot.
+%   vectarrow(p0,p1) plots a line vector with arrow pointing from point p0
+%   to point p1. The function can plot both 2D and 3D vector with arrow
+%   depending on the dimension of the input
+%
+%   Example:
+%       3D vector
+%       p0 = [1 2 3];   % Coordinate of the first point p0
+%       p1 = [4 5 6];   % Coordinate of the second point p1
+%       vectarrow(p0,p1)
+%
+%       2D vector
+%       p0 = [1 2];     % Coordinate of the first point p0
+%       p1 = [4 5];     % Coordinate of the second point p1
+%       vectarrow(p0,p1)
+%
+%   See also Vectline
+
+%   Rentian Xiong 4-18-05
+%   $Revision: 1.0
+
+  if max(size(p0))==3
+      if max(size(p1))==3
+          x0 = p0(1);
+          y0 = p0(2);
+          z0 = p0(3);
+          x1 = p1(1);
+          y1 = p1(2);
+          z1 = p1(3);
+          plot3([x0;x1],[y0;y1],[z0;z1]);   % Draw a line between p0 and p1
+
+          p = p1-p0;
+          alpha = 0.1;  % Size of arrow head relative to the length of the vector
+          beta = 0.1;  % Width of the base of the arrow head relative to the length
+
+          hu = [x1-alpha*(p(1)+beta*(p(2)+eps)); x1; x1-alpha*(p(1)-beta*(p(2)+eps))];
+          hv = [y1-alpha*(p(2)-beta*(p(1)+eps)); y1; y1-alpha*(p(2)+beta*(p(1)+eps))];
+          hw = [z1-alpha*p(3);z1;z1-alpha*p(3)];
+
+          hold on
+          plot3(hu(:),hv(:),hw(:))  % Plot arrow head
+          grid on
+          xlabel('x')
+          ylabel('y')
+          zlabel('z')
+          hold off
+      else
+          error('p0 and p1 must have the same dimension')
+      end
+  elseif max(size(p0))==2
+      if max(size(p1))==2
+          x0 = p0(1);
+          y0 = p0(2);
+          x1 = p1(1);
+          y1 = p1(2);
+          plot([x0;x1],[y0;y1]);   % Draw a line between p0 and p1
+
+          p = p1-p0;
+          alpha = 0.1;  % Size of arrow head relative to the length of the vector
+          beta = 0.1;  % Width of the base of the arrow head relative to the length
+
+          hu = [x1-alpha*(p(1)+beta*(p(2)+eps)); x1; x1-alpha*(p(1)-beta*(p(2)+eps))];
+          hv = [y1-alpha*(p(2)-beta*(p(1)+eps)); y1; y1-alpha*(p(2)+beta*(p(1)+eps))];
+
+          hold on
+          plot(hu(:),hv(:))  % Plot arrow head
+          grid on
+          xlabel('x')
+          ylabel('y')
+          hold off
+      else
+          error('p0 and p1 must have the same dimension')
+      end
+  else
+      error('this function only accepts 2D or 3D vector')
+  end