org.autoplot.cdf.CdfDataSource

CDF data source based on Nand Lal's pure-Java CDF reader. CDF, or Common Data Format, is a NASA data format.

CdfDataSource( java.net.URI uri )

timer

To resolve bug 1002 we unload the cache after 10 seconds. Joe at Aerospace had a problem where he couldn't kill a lingering autoplot process and then couldn't get at the file because it held a reference to the file. Now we automatically unload all the cached files. I did look at just disabling the cache, but the file is open and closed three times during the load. See http://sourceforge.net/p/autoplot/bugs/1002.

checkCdf

checkCdf( java.io.File cdfFile ) → void

check if the file really is a CDF, and throw IllegalArgumentException if it is not. NetCDF files occasionally use the extension .cdf.

Parameters

cdfFile - a CDF file (or not)

Returns:

void (returns nothing)

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getCdfFile

getCdfFile( String fileName ) → gov.nasa.gsfc.spdf.cdfj.CDFReader

get the abstract access object to the given CDF file. This provides read-only access to the file, and a cache is used to limit the number of references managed. See bug http://sourceforge.net/p/autoplot/bugs/922/ The result returns a CDF object which contains a read-only memory-mapped byte buffer.

Parameters

fileName - a String

Returns:

the CDF reference used to access the file

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getDataSet

getDataSet( ProgressMonitor mon ) → QDataSet

Parameters

mon - a ProgressMonitor

Returns:

org.das2.qds.QDataSet

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getDataSet

getDataSet( ProgressMonitor mon, java.util.Map attr1 ) → QDataSet

get the dataset with the attributes. attributes may be specified separately to support CDAWebDataSource, which uses a "master" cdf to override the specs within each file.

Parameters

mon - a ProgressMonitor
attr1 - a java.util.Map

Returns:

a QDataSet

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getDataSet

getDataSet( java.io.File cdfFile, gov.nasa.gsfc.spdf.cdfj.CDFReader cdf, String svariable, java.util.Map attr1, java.util.Map map, ProgressMonitor mon ) → org.das2.qds.MutablePropertyDataSet

get the dataset for svariable from the CDF file, implementing virtual variables if needed. This supports for svariable:

Note this does not check for cycles, so be careful.

Parameters

cdfFile - null or the name of the cdfFile, used only in logger messages.
cdf - a CDFReader
svariable - a String
attr1 - a java.util.Map
map - a java.util.Map
mon - a ProgressMonitor

Returns:

an org.das2.qds.MutablePropertyDataSet

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getMetadata

getMetadata( ProgressMonitor mon ) → java.util.Map

Parameters

mon - a ProgressMonitor

Returns:

java.util.Map

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getMetadataModel

getMetadataModel( ) → org.autoplot.datasource.MetadataModel

{@inheritDoc }

Returns:

an IstpMetadataModel

See Also:

IstpMetadataModel


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printCacheReport

printCacheReport( ) → void

Returns:

void (returns nothing)

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