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# champ1

2D vector field plot with colored arrows

### Calling Sequence

champ1(x,y,fx,fy,[arfact,rect,strf])

### Arguments

- x,y
two vectors which define the grid.

- fx
a matrix which describes the x component of the vector field.

`fx(i,j)`

is the x component of the vector field at point`(x(i),y(j))`

.- fy
a matrix which describes the y component of the vector field.

`fy(i,j)`

is the y component of the vector field at point`(x(i),y(j))`

.- arfact
an optional argument of type real which gives a scale factor for the display of the arrow heads on the plot (default value is 1.0).

- rect
a vector

`rect=[xmin,ymin,xmax,ymax]`

which gives the boundaries of the graphics frame to use.- frameflag
controls the computation of the actual coordinate ranges from the minimal requested values. The associated value should be an integer ranging from 0 to 8.

- axesflag
specifies how the axes are drawn. The associated value should be an integer ranging from 0 to 5.

- strf
a string of length 3 "xyz" which has the same meaning as the

`strf`

parameter of`plot2d`

. The first character x has no effect with`champ1`

.

### Description

`champ1`

draws a 2D vector field with colored arrows. The
color of the arrows depends on the intensity of the field.

If you want arrows proportional to the intensity of the field, use
`champ`

.

Enter the command `champ1()`

to see a demo.

### See Also

### Authors

J.Ph.C.

<< champ | 2d_plot | champ_properties >> |