Note: Some of these preferences only take effect the next time you run the IDV or when you create a new view window. The preferences also may be overwritten when you use bundles. See here for more information about the bundle facility.
Show Toolbar in Windows. Should the main toolbar (actions and Toolbar Favorite Bundles) be shown in new windows.
Ask where to put zipped data files. When opening a data bundle (zidv), should the user be prompted where to save the data files?
Auto-select data when loading a template. A display can be saved as a template without data. When it is created should the IDV attempt to automatically select the appropriate data fields.
Remove standalone displays. When the window is closed for a stand alone display (i.e., one that does not have a display component in a main view window. e.g., html display) should the display be removed.
Resource Sitepath. Allows you to define where the IDV looks for additional resources. Use this when you want to have a set of resources shared by a group of users. See the Site Configuration documentation for more details.
Look and Feel. Define the Java look and feel to use. This will take effect when you next run the IDV.
Date Format. This allows you to define how the IDV displays dates. The date format string uses the following symbols. Note, these symbols can be repeated to give different results. For example:
"MMMM" gives full month name "MMM" gives short month name "MM" gives 2 digit month number "M" gives 1 or 2 digit month number
|M||Month in year||July; Jul; 07|
|w||Week in year||27|
|W||Week in month||2|
|D||Day in year||189|
|d||Day in month||10|
|F||Day of week in month||2|
|E||Day in week||Tuesday; Tue|
|H||Hour in day (0-23)||0|
|k||Hour in day (1-24)||24|
|K||Hour in am/pm (0-11)||0|
|h||Hour in am/pm (1-12)||12|
|m||Minute in hour||30|
|s||Second in minute||55|
|z||Time zone||Pacific Standard Time; PST; GMT-08:00|
|Z||RFC 822 Time zone||-0800|
Time Zone. Choose the time zone to display time with.
Lat/Lon Format. Format used when showing lat/lon. This is a normal decimal format that can contain the symbols:
|#||Digit, zero shows as absent|
|.||Decimal separator or monetary decimal separator|
|E||Separates mantissa and exponent in scientific notation.|
|;||Subpattern boundary Separates positive and negative subpatterns|
Number Style. Choose the formatting style for numbers such as the lat/lon readout and color table range. System Default uses the default regionalization set for your computer. English/US uses a period for the decimal separator. You need to restart the IDV for this to take effect.
This defines an html template that is used to display data readouts in
the data probe display. This html template can contain macros that are replaced
with the probed values.
%value% Formatted value
%unit% Display unit
%rawvalue% Unformatted value
%rawunit% Original unit
Distance Unit. When displaying distances (e.g., in the Range and Bearing Control) this is the default unit that is used.
Sampling Mode. You can specify the type of sampling you want for the various data probes. Choose between a weighted average sampling or nearest neighbor.
Pressure to Height. You can specify the type of algorithm you want to use for converting from pressure coordinates to height. See the FAQ for more information on this option.
Show Overview Map. A 3D display can have a small overview map shown under the legend. Note: This is kind of flaky.
Reset Projection With New Data. When checked will cause each new display made in the IDV to snap the whole view window to the native projection of the data. This can be undesirable if you are overlaying several kinds of some of which have differing projections.
Enable Adaptive Resolution. When loading large datasets with this option enabled, the IDV calculates the resolution of the map view window, dynamically sets the data sampling, and loads sufficient data to generate the image.
Show Globe Background. In a globe display, show a solid background if this is selected. The default color of the background can be set in the Color Scheme section.
Show Viewpoint Toolbar. Enable the Viewpoint toolbar.
Show Zoom/Pan Toolbar. Enable the Zoom/Pan toolbar.
Show Undo/Redo Toolbar. Enable the Undo/Redo toolbar.
Add spacebutton adds a space between toolbar entries. The
Reload Originalresets the toolbar list to the one before any changes have been made. The
Reload Systembutton resets the toolbar list to the original one defined in the system.
Memory. You can set the amount of memory allocated to the IDV as a percentage of the total system memory or a specific amount (in megabytes). On 32-bit systems, the maximum is 1.5 gigabytes (1500 MB).
Cache Data in Memory. The IDV normally tries to cache data that it loads in memory. You can turn this behavior off with a preference.
Disk Cache Size. The IDV will cache some data sets to disk to eliminate network latency. Specify the maximum amount of disk size with this preference.
Write Grib Index in Disk Cache. The IDV will normally cache grib data index sets to disk in the default directory: .unidata/idv/DefaultIdv/tmp/nj22. If you uncheck this box, the IDV will save those index sets to the same directory as the grib datasets. When you make the change, you need to restart the IDV for this change to take effect, and you need to make sure the write permission on this data directory.
Thread Count. The IDV can do processing in multiple threads. This allows one to take advantage of mulitple core chip architectures. One can set both the thread count for rendering and for data reading. For rendering, each time step for each display is rendered separately. We suggest that for rendering running with 2 threads is optimal. We have not seen large improvements with a higher number of threads (due to memory issues). Also, it is easy to exceed the maximum memory amount if one is rendering in a large number of threads.
The data reading thread count is how many parallel reads (e.g., per time step) there are when accessing data on remote servers (e.g., THREDDS/OpenDAP, ADDE). There is no optimal thread count for data reading because it depends on the configuration of the server machine. We have found that 4 works well.
Max Image Size. This field allows you to set a maximum image size (in pixels) that is to be displayed. When this preference is set the image display will adjust the Pixel Sampling to reduce the image to less than the preferred value. This allows for the initial display of large images without causing memory issues.
Java 3D. These preferences control some Java 3D settings that reduce memory usage when checked.