NAME¶
CONRAQ - draws a two dimensional contour map from irregularly distributed data.
This is the small quick version of the Conran_family. It also has the fewest
available number of options.
STATUS¶
CONRAQ is approaching obsolescence. If you have available an interpolation
package which can do a random to gridded interpolation equal to that built
into the Conran_family, then we recommend that you grid your dataset and use
the Conpack utility instead. Refer to the conpack and conpack_family_params
man pages as well as the NCAR Graphics Contouring and Mapping Tutorial.
SYNOPSIS¶
CONRAQ (XD,YD,ZD,NDP,WK,IWK)
DESCRIPTION¶
- XD
- Input, real array -- of dimension NDP containing the X coordinates of the
data points.
- YD
- Input, real array -- of dimension NDP containing the Y coordinates of the
data points.
- ZD
- Input, real array -- of dimension NDP containing the data values at the
points.
- NDP
- Input, integer -- is the number of data points to be contoured. NDP must
be 4 or larger.
- WK
- Input, real array -- workspace of dimension 15*NDP.
- IWK
- Input, integer array -- workspace which must be dimensioned at least
IWK((27+NCP)*NDP).
The parameter NCP controls the number of data points to be used in the
interpolation. Increasing NCP causes more of the surrounding data to
influence the point of interpolation. In the case of linear interpolation
NCP is always 4. In the case of C1 interpolation, NCP can vary from 2 to
25 with 4 as the default.
The interpolation option is selected using parameter ITP. See the
conran_family_params man page for a description of all internal
parameters.
USAGE¶
Contour lines are not smoothed or thinned, but a number of options are available
through the use of internal parameters. See the conran_family_params man page.
Super and standard-and-smooth versions of the Conran_family are also available
through entries CONRAS and CONRAN, respectively.
EXAMPLES¶
Use the ncargex command to see the relevant example tconaq.
ACCESS¶
To use CONRAQ, load the NCAR Graphics libraries conraq, ncarg, ncarg_gks, and
ncarg_c, preferably in that order.
The special conraq library is not loaded as part of the normal NCAR Graphics
installation. It can be loaded by the user directly, along with the above
three standard libraries, or loaded implicitly through the use of the -quick
option of the ncargf77 command.
- QUICK
- Command: "ncargf77 -quick mycode.f"
MESSAGES¶
See the conran_family man page for a description of all Conran_family error
messages and/or informational messages.
SEE ALSO¶
Online: conran, conras, conran_family_params, conran_family, conop1, conop2,
conop3, conop4, conpack, conpack_params, bivar, dashline_family, ncargf77
Hardcopy: NCAR Graphics Contouring and Mapping Tutorial; NCAR Graphics
Fundamentals, UNIX Version; User's Guide for NCAR GKS-0A Graphics
COPYRIGHT¶
Copyright (C) 1987-2009
University Corporation for Atmospheric Research
The use of this Software is governed by a License Agreement.