6.3.4. Reprojection

6.3.4.1. Operation


Operation name

Reprojection

Description

This Operation converts spatial data from one coordinate system to another.

Utilised in

Use Case #9 Workflow


6.3.4.2. Options


name

coordinate system

description

requested coordinate system

items

UTM, geographic, regular lat-lon, polar centred, sinusoidal, tripolar, …


name

ellipsoid

description

requested ellipsoid

items

WGS84, GRS80, Bessel, Clarke


name

reprojection method

description

method for reprojecting the data

items

nearest neighbor (primarily for thematic maps), bilinear, cubic convolution


name

propagation of uncertainties

description

analysis of propagation of uncertainties during geometric adjustment


6.3.4.3. Input data


name

longitude (lon, x)

type

floating point number

range

[-180.; +180.] respectively [0.; 360.]

dimensionality

vector

description

grid information on longitudes


name

latitude (lat, y)

type

floating point number

range

[-90.; +90.]

dimensionality

vector

description

grid information on latitudes


name

height (z)

type

floating point number

range

[-infinity; +infinity]

dimensionality

vector

description

grid information on height/depth


name

variable

type

floating point number

range

[-infinity; +infinity]

dimensionality

cube or 4D

description

values of a certain variable


6.3.4.4. Output data


name

adjusted longitude (lon’, x’)

type

floating point number

range

[-180.; +180.] respectively [0.; 360.]

dimensionality

vector

description

new grid information on longitudes


name

adjusted latitude (lat’, y’)

type

floating point number

range

[-90.; +90.]

dimensionality

vector

description

new grid information on latitudes


name

adjusted height (z’)

type

floating point number

range

[-infinity; +infinity]

dimensionality

vector

description

new grid information on height/depth


name

adjusted variable

type

floating point number

range

[-infinity; +infinity]

dimensionality

cube or 4D

description

new values of a certain variable


6.3.4.5. Parameters


name

nx

type

integer

valid values

[1; infinity]

default value

number of longitudes in dataset

description

original number of longitudes


name

ny

type

integer

valid values

[1; infinity]

default value

number of latitudes in dataset

description

original number of latitudes


name

nz

type

integer

valid values

[1; infinity]

default value

number of altitude levels in dataset

description

original number of altitude levels


name

nx’

type

integer

valid values

[1; infinity]

default value
description

adjusted number of longitudes


name

ny’

type

integer

valid values

[1; infinity]

default value
description

adjusted number of latitudes


name

nz’

type

integer

valid values

[1; infinity]

default value
description

adjusted number of altitude levels


name

size of sliding window

type

integer

valid values

[1; infinity], odd numbers

default value

3

description

side length of the sliding window used for interpolation (e.g. 3x3, 9x9)


name

original coordinate system

description

definition of original coordiate system


name

adjusted coordinate system

description

definition of requested coordiate system