gen - Generate grid

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Name

gen — Generate grid

Syntax

gen [inc] | [nx ny [nz]] [gse] [gre]

gen xbo

gen gpl nx ny [step]

Description

Generate an empty grid within the graphical window, either surface grid or cube. A quick way to establish a grid that afterwards can be given values and used in various ways.

Arguments

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No arguments, the grid will have the same number of rows and columns as the last grid that set the @nrow @ncol variables.

inc xinc yinc

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Generate an empty grid with increment xinc and yinc. The z values of the grid will be 0.

nx ny

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Generate an empty grid with nx times ny elements in rows and columns. The z values in the grid will be 0. To fill the grid with random values use the command mak ras i.e make random scalars.

inc xinc yinc zinc

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Generate an empty cube with increment xinc and yinc and zinc. The scalar values of the cube will be 0.

nx ny nz

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Generate an empty grid with nx times ny times nz elements in rows and columns. The scalar values of the cube will be 0.

gse

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Grid selecet. Select the part of the grid that is inside the graphical window window.

gre workspacename

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Replace the grid in workspacename into the active grid. The two grids must have the same dimension and location.

xbo

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Generate an extra border of boundary cells around the grid or cube. The boundary cells will have no values. For grids one can fill the boundary using the command grp ext.

gpl nx ny [step]

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Generate gridplane acording to these rules:

1, 2 or 3 input points will generate a plane through the points.
More than 3 input points generate a step plane after a nearest point rule.
If the step argument is used a step plane is generated in all cases.

Examples

Ex.1: Generate grid and cube

# generate a dummy grid and fill it with random scalar values
gen 100 100 ; # generate a grid with 100 x 100 elements in rows and columns
mak ras ; # mak random scalars into the grid

# generate a dummy cube and fill it with random scalar values
win 450000 460000 6450000 6460000 1000 5000 ; # specify the grid window
gen 100 100 50 ; # generate a grid with 100 x 100 x 50 elements in rows, columns and layers
mak ras ; # mak random scalars into the cube
dis ; # display the cube

The above example produces this image of the generated cube.

Result of the gen command

gen - Generate grid

Name

Syntax

Description

Arguments

Examples

Ex.1: Generate grid and cube

See also