MATLAB Function Reference (Volume 2: Graphics)

errorbarPurpose2errorbarPlot error bars along a curveSyntaxDescriptionerrorbar(Y,E)errorbar(X,Y,E)errorbar(X,Y,L,U)errorbar(...,LineSpec)h = errorbar(...)Error bars show the confidence level of data or the deviation along a curve.errorbar(Y,E) plots Y and draws an error bar at each element of Y. The errorbar is a distance of E(i) above and below the curve so that each bar issymmetric and 2*E(i) long.errorbar(X,Y,E) plots X versus Y with symmetric error bars 2*E(i) long. X, Y,E must be the same size. When they are vectors, each error bar is a distance ofE(i) above and below the point defined by (X(i),Y(i)). When they arematrices, each error bar is a distance of E(i,j) above and below the pointdefined by (X(i,j),Y(i,j)).errorbar(X,Y,L,U) plots X versus Y with error bars L(i)+U(i) long specifyingthe lower and upper error bars. X, Y, L, and U must be the same size. When theyare vectors, each error bar is a distance of L(i) below and U(i) above the pointdefined by (X(i),Y(i)). When they are matrices, each error bar is a distanceof L(i,j) below and U(i,j) above the point defined by (X(i,j),Y(i,j)).errorbar(...,LineSpec) draws the error bars using the line type, markersymbol, and color specified by LineSpec.h = errorbar(...) returns a vector of handles to line graphics objects.RemarksWhen the arguments are all matrices, errorbar draws one line per matrixcolumn. If X and Y are vectors, they specify one curve.2-129