Ferret On-line Demonstrations
On line demonstrations are available to familiarize you
with Ferret's features. The jnl files are "go scripts", available to you
when you run Ferret, for example: "GO tutorial" shows you around Ferret.
-
-
-
Ferret tutorial (based on Ferret V3)
-
Ferret Tour- html version
-
tutorial.jnl- script file
-
Remote data access (with OPeNDAP)
-
OPeNDAP (protocol formerly known as DODS:
Distributed Oceanographic Data System)
-
dods_demo - html version
-
dods_demo.jnl - script file
-
dods_winds_demo
-
External functions examples
-
Sorting data ef_sort_demo
-
Fast Fourier Transforms ef_fft_demo
-
Empirical Orthogonal Functions (EOF's)
ef_eof_demo
-
Gridding: interpolate point data to a grid objective_analysis_demo
-
Writing Vis5D-formatted data file
ef_wv5d_demo
-
Binary stream file capability
-
binary read demo
- html version
-
binary read demo.jnl -
script file
-
Constant array syntax
-
constant_array_demo
- html version
-
constant_array_demo.jnl
- script file
-
COADS ocean-atmosphere data set
-
COADS tour- html version
-
coads_demo.jnl- script file
-
Levitus data set: Climatological Atlas of the World Ocean
-
LAS\Levitus
tour- html version
-
levitus_demo.jnl- script
file
-
Color palettes
-
Color palettes map colors to the range of data values by percent, level,
or value
-
palette_demo- html version
-
palette_demo.jnl
-
Map Projections
-
Map projections and map projection utility scripts
-
mp_demo- html version
-
mp_demo.jnl
-
Track plotting
-
trackplot_demo-
html version
-
trackplot_demo.jnl
-
Polymark demo: plot points using symbols colored by values of a variable
-
polymark_demo- html
version
-
polymark_demo.jnl
-
Polytube demo: plot a colored tube of variable values along a plotted track
-
polytube_demo- html
version
-
polytube_demo.jnl
-
-
-
Continuous colorbar
-
Using the ccbar.jnl script to make continuous colorbars
-
ccbar_demo- html version
-
ccbar_demo.jnl
-
Color-filled Vectors
-
Using the poly_vectors and mp_poly_vectors scripts. These set up to
issue POLYGON commands to draw filled vector arrows.
-
poly_vec_demo- html version
-
poly_vec_demo.jnl
-
Graticule lines
-
Using the /GRATICULE, /HGRATICULE, and /VGRATICULE qualifiers to draw
graticule lines (guide lines) at the tic marks of horizontal and vertical
axes.
-
graticules_demo- html version
-
graticules_demo.jnl
-
Detailed land outlines
-
Using the detailed data in the dataset geo_borders_intermed to draw continental,
international land and marine boundaries, state boundaries, and rivers.
-
land_detail_demo- html version
-
land_detail_demo.jnl
- Here is the data file
geo_borders_intermed.nc
-
The demos below are journal scripts only. Run these
from Ferret with "GO coads_demo", etc
-
Data sets
-
COADS ocean-atmosphere data sets coads_demo.jnl
-
ETOPO (Equator to Poles) data set topographic_relief_demo.jnl
-
FNOC Navy surface marine wind data fnoc_demo.jnl
-
Levitus data set: Climatological Atlas of the World Ocean
levitus_demo.jnl
-
-
Files and data manipulation
-
File reading ASCII FILES file_reading_demo.jnl
-
Editing data: "hand-editing" a variable edit_data_demo.jnl
-
Regridding data from one grid to another regridding_demo.jnl
-
-
Map projections
-
Map projections mp_demo.jnl
-
Mercator projection meraator_demo.jnl
-
Multi-variable data: plots available for data with multiple dependent axes
multi_variable_demo.jnl
-
Polar stereographic map projections polar_demo.jnl
-
South polar stereographic map projections polar_south_demo.jnl
-
-
Math and Statistics
-
Mathematics: Computation and display of "abstract expressions" mathematics_demo.jnl
-
Statistics: sample distribution functions statistics_demo.jnl
-
-
Contouring and 2-D plots
-
Depth-to-density: contouring with a user-defined axis
depth_to_density_demo.jnl
-
Custom contouring custom_contour_demo.jnl
-
Color palettes for color-fill plots palette_demo.jnl
-
Topographic relief plotting; some of the ETOPO (Equator to Poles) data
set topographic_relief_demo.jnl
-
Vector arrow plots vector_demo.jnl
-
-
Plot symbols, lines, patterns
-
Examples of line styles used by the PLOT command line_samples.jnl
-
Examples of pen color and thickness line
thickness.jnl
-
Display the PLOT+| plotting symbols show_88_syms.jnl
-
Show all the patterns available for filled-contour plotting show_all_patterns.jnl
-
Track plotting
-
Polymark demo: plot points using symbols colored by values of a variable
polymark_demo.jnl
-
Polytube demo: plot a colored tube of variable values along a plotted track
polytube_demo.jnl
-
Track plot trackplot_demo.jnl
-
Other plot topics
-
Log plot log_plot_demo.jnl
-
Sigma coordinates sigma_coordinate_demo.jnl
-
Viewports: plotting several plots on a page viewports_demo.jnl
-
Wire frame plots to visualize 3-D data wire_frame_demo.jnl
-
-
... And just for fun
-
line plots spirograph_demo.jnl
-
pretty color pictures splash_demo.jnl
-