# GraphImageΒΆ

view2D.spad line 1 [edit on github]

TwoDimensionalGraph creates virtual two dimensional graphs (to be displayed on TwoDimensionalViewports).

- appendPoint: (%, Point DoubleFloat) -> Void
`appendPoint(gi, pt)`

appends the point`pt`

to the end of the list of points component for the graph,`gi`

, which is of the domain GraphImage.

- coerce: % -> OutputForm
`coerce(gi)`

returns the indicated graph,`gi`

, of domain GraphImage as output of the domain OutputForm.

- coerce: List List Point DoubleFloat -> %
`coerce(llp)`

creates and returns a graph of the domain GraphImage which is composed of the list of list of points given by`llp`

, and whose point colors, line colors and point sizes are determined by the default functions pointColorDefault, lineColorDefault, and pointSizeDefault. The graph data is then sent to the viewport manager where it waits to be included in a two-dimensional viewport window.

- component: (%, List Point DoubleFloat, Palette, Palette, PositiveInteger) -> Void
`component(gi, lp, pal1, pal2, p)`

sets the components of the graph,`gi`

of the domain GraphImage, to the values given. The point list for`gi`

is set to the list`lp`

, the color of the points in`lp`

is set to the palette color`pal1`

, the color of the lines which connect the points`lp`

is set to the palette color`pal2`

, and the size of the points in`lp`

is given by the integer`p`

.

- component: (%, Point DoubleFloat) -> Void
`component(gi, pt)`

modifies the graph`gi`

of the domain GraphImage to contain one point component,`pt`

whose point color, line color and point size are determined by the default functions pointColorDefault, lineColorDefault, and pointSizeDefault.

- component: (%, Point DoubleFloat, Palette, Palette, PositiveInteger) -> Void
`component(gi, pt, pal1, pal2, ps)`

modifies the graph`gi`

of the domain GraphImage to contain one point component,`pt`

whose point color is set to the palette color`pal1`

, line color is set to the palette color`pal2`

, and point size is set to the positive integer`ps`

.

- graphImage: () -> %
`graphImage()`

returns an empty graph with 0 point lists of the domain GraphImage. A graph image contains the graph data component of a two dimensional viewport.

- key: % -> Integer
`key(gi)`

returns the process ID of the given graph,`gi`

, of the domain GraphImage.

- latex: % -> String
from SetCategory

- makeGraphImage: (List List Point DoubleFloat, List Palette, List Palette, List PositiveInteger) -> %
`makeGraphImage(llp, lpal1, lpal2, lp)`

returns a graph of the domain GraphImage which is composed of the points and lines from the list of lists of points,`llp`

, whose point colors are indicated by the list of palette colors,`lpal1`

, and whose lines are colored according to the list of palette colors,`lpal2`

. The paramater`lp`

is a list of integers which denote the size of the data points.

- makeGraphImage: (List List Point DoubleFloat, List Palette, List Palette, List PositiveInteger, List DrawOption) -> %
`makeGraphImage(llp, lpal1, lpal2, lp, lopt)`

returns a graph of the domain GraphImage which is composed of the points and lines from the list of lists of points,`llp`

, whose point colors are indicated by the list of palette colors,`lpal1`

, and whose lines are colored according to the list of palette colors,`lpal2`

. The paramater`lp`

is a list of integers which denote the size of the data points, and`lopt`

is the list of draw command options.

- makeGraphImage: List List Point DoubleFloat -> %
`makeGraphImage(llp)`

returns a graph of the domain GraphImage which is composed of the points and lines from the list of lists of points,`llp`

, with default point size and default point and line colours.

- point: (%, Point DoubleFloat, Palette) -> Void
`point(gi, pt, pal)`

modifies the graph`gi`

of the domain GraphImage to contain one point component,`pt`

whose point color is set to be the palette color`pal`

, and whose line color and point size are determined by the default functions lineColorDefault and pointSizeDefault.

- pointLists: % -> List List Point DoubleFloat
`pointLists(gi)`

returns the list of lists of points which compose the given graph,`gi`

, of the domain GraphImage.

- putColorInfo: (List List Point DoubleFloat, List Palette) -> List List Point DoubleFloat
`putColorInfo(llp, lpal)`

takes a list of list of points,`llp`

, and returns the points with their hue and shade components set according to the list of palette colors,`lpal`

.

- ranges: % -> List Segment Float
`ranges(gi)`

returns the list of ranges of the point components from the indicated graph,`gi`

, of the domain GraphImage.

- ranges: (%, List Segment Float) -> List Segment Float
`ranges(gi, lr)`

modifies the list of ranges for the given graph,`gi`

of the domain GraphImage, to be that of the list of range segments,`lr`

, and returns the new range list for`gi`

.

- sendGraphImage: % -> Void
`sendGraphImage(gi)`

takes the given graph,`gi`

of the domain GraphImage, and sends it`'s`

data to the viewport manager where it waits to be included in a two-dimensional viewport window.`gi`

cannot be an empty graph.

- units: % -> List Float
`units(gi)`

returns the list of unit increments for the`x`

and`y`

axes of the indicated graph,`gi`

, of the domain GraphImage.

- units: (%, List Float) -> List Float
`units(gi, lu)`

modifies the list of unit increments for the`x`

and`y`

axes of the given graph,`gi`

of the domain GraphImage, to be that of the list of unit increments,`lu`

, and returns the new list of units for`gi`

.