Statistics Toolbox

errorbar

Plot error bars along a curve

Syntax

• errorbar(X,Y,L,U,symbol)
  errorbar(X,Y,L)
  errorbar(Y,L)
  

Description

errorbar(X,Y,L,U,symbol) plots X versus Y with error bars specified by L and U. X, Y, L, and U must be the same length. If X, Y, L, and U are matrices, then each column produces a separate line. The error bars are each drawn a distance of U(i) above and L(i) below the points in (X,Y). symbol is a string that controls the line type, plotting symbol, and color of the error bars.

errorbar(X,Y,L) plots X versus Y with symmetric error bars about Y.

errorbar(Y,L) plots Y with error bars [Y-L Y+L].

The errorbar function is a part of the standard MATLAB language.

Example

• lambda = (0.1:0.2:0.5);
  r = poissrnd(lambda(ones(50,1),:));
  [p,pci] = poissfit(r,0.001);
  L = p - pci(1,:) 
  U = pci(2,:) - p
  errorbar(1:3,p,L,U,'+')
  L =
      0.1200    0.1600    0.2600
  U =
      0.2000    0.2200    0.3400
  
  
  

ecdf

ewmaplot