McIDAS-X User's Guide
Version 2024.1

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MAKNAV

Creates a navigation entry for an area.


Format

MAKNAV area [keywords]


Parameter

area

area number to navigate (default=0)


Keywords

LAMB=

npl npe slat1 slat2 qlon size pole

Lambert conformal projection

 

 

npl

pole image line

 

 

npe

pole image element

 

 

slat1

standard latitude 1 (default=30)

 

 

slat2

standard latitude 2 (default=60)

 

 

qlon

normal or center longitude

 

 

size

size of one pixel, in km, at standard latitudes

 

 

pole

N

North Pole (default)

 

 

 

S

South Pole

MERC=

eql eqe slat qlon size

Mercator projection

 

 

eql

equator image line

 

 

eqe

equator image element

 

 

slat

standard latitude (default=0)

 

 

qlon

normal or center longitude

 

 

size

size of one pixel, in km, at standard latitude

MOLL=

eql eqe qlon size

Mollweide projection

 

 

eql

equator image line

 

 

eqe

equator image element

 

 

qlon

normal or center longitude

 

 

size

size of one pixel, in km, at standard latitude

PLANET=

planet to navigate (default=EARTH)

PS=

npl npe slat qlon size pole

polar stereographic projection

 

 

npl

pole image line

 

 

npe

pole image element

 

 

slat

standard latitude (default=60)

 

 

qlon

normal or center longitude

 

 

size

size of one pixel, in km, at standard latitude

 

 

pole

N

North Pole (default)

 

 

 

S

South Pole

RADR=

cenl cene clat clon size rot

radar projection

 

 

cenl

radar site center line

 

 

cene

radar site center element

 

 

clat

radar site latitude

 

 

clon

radar site longitude

 

 

rot

image rotation (default=0)

RECT=

lin lat ele lon deglin degele

rectangular projection

 

 

lin

image line number

 

 

lat

image line latitude

 

 

ele

image element number

 

 

lon

image element longitude

 

 

deglin

degrees latitude per image line

 

 

degele

degrees longitude per image element

SIN=

cenl cene clat clon size

sinusoidal equal area projection

 

 

cenl

radar site center line

 

 

cene

radar site center element

 

 

clat

radar site latitude

 

 

clon

radar site longitude

 

 

size

size of one pixel, in km, at standard latitude

TANC=

npl npe slat glon size

tangent cone projection

 

 

npl

pole image line

 

 

npe

pole image element

 

 

slat

standard latitude (default=60)

 

 

qlon

normal or center longitude

 

 

size

size of one pixel, in km, at standard latitude


See Also

Use the IMGREMAP command to remap into the map projection created by MAKNAV.


Example

The example below copies a GOES satellite image and remaps it into a Mercator projection in local area 6000.

IMGCOPY GOES/VIS.5 LOCAL/AREA.6000 STA=KLAX SIZE=480 640 STYPE=VISR BAND=1

This entry copies the image in position 5 in the dataset GOES/VIS to position 6000 in dataset LOCAL/AREA. The STYPE=VISR keyword converts the image to 1-byte data with source type VISR and calibration type BRIT.

IMGCHA LOCAL/AREA.6000 ELE=1 LIN=1 RES=8 8

This entry sets the appropriate line and element resolutions and coordinates for the desired projection.

MAKNAV 6000 MERC=2000 2000 0 90 1

This entry generates a Mercator projection codicil entry for local area 6000.

IMGREMAP GOES/VIS.5 LOCAL/AREA.6000 PRO=DEST

This entry remaps the image in position 5 in the dataset GOES/VIS into position 6000 in dataset LOCAL/AREA.


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