Matlab Functions - plot

plot

Matlab Functions List

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!! 例子见 Matlab Graphics - Line Plots

• plot(X,Y) creates a 2-D line plot of the data in Y versus the corresponding values in X

  • If X and Y are both vectors, then they must have equal length
  • If X and Y are both matrices, then they must have equal size, and it plots columns of Y versus columns of X
  • If one of X or Y is a vector and the other is a matrix, then the matrix must have dimensions such that one of its dimensions equals the vector length
    • If the number of matrix rows equals the vector length, then the plot function plots each matrix column versus the vector
    • If the number of matrix columns equals the vector length, then the function plots each matrix row versus the vector
    • If the matrix is square, then the function plots each column versus the vector.
  • If one of X or Y is a scalar and the other is either a scalar or a vector, then the function plots discrete points
    • To see the points you must specify a marker symbol

• plot(X,Y,LineSpec) sets the appearance of the plot by LineSpec

  • LineSpec should be a char vector made up of
    • line style
    • marker symbol
    • color
  • 无顺序, 也无需包含全部三者
  • For example: -.or, db, --mo

• plot(X1,Y1,...,Xn,Yn) plots multiple X, Y pairs using the same axes for all lines

• plot(X1,Y1,LineSpec1,...,Xn,Yn,LineSpecn) sets the line style, marker type, and color for each line

  • You can mix X, Y, LineSpec triplets with X, Y pairs, like plot(X1,Y1,X2,Y2,LineSpec2,X3,Y3)

• plot(Y) creates a 2-D line plot of the data in Y versus the index of each value

  • If Y is a vector, then the x-axis scale ranges from 1 to length(Y)
  • If Y is a matrix, then the plot function plots the columns of Y versus their row number. The x-axis scale ranges from 1 to the number of rows in Y
  • If Y is complex, then the plot function plots the imaginary part of Y versus the real part of Y
    • In this case plot(Y) is equivalent to plot(real(Y),imag(Y))

• plot(Y,LineSpec) sets the line style, marker symbol, and color

• plot(___,Name,Value) specifies line properties using one or more Name,Value pair arguments

  • Name-value pair settings apply to all the lines plotted.

• plot(ax,___) creates the line in the axes specified by ax instead of in the current axes (gca) !tocheck

• h = plot(___) returns a column vector of chart line objects