visad.data.gis
Class UsgsDemForm

java.lang.Object
  visad.data.FormNode
      visad.data.Form
          visad.data.gis.UsgsDemForm

All Implemented Interfaces:

FormFileInformer

public class UsgsDemForm
extends Form
implements FormFileInformer

UsgsDemForm is the USGS DEM data format adapter for serialized visad.Data objects.

Field Summary

Fields inherited from class visad.data.Form

mathType

Constructor Summary

UsgsDemForm()
Construct a Form for reading in USGS DEM files

Method Summary

void	add(String id, Data data, boolean replace) Add data to an existing data object
String[]	getDefaultSuffixes() Get a list of default suffixes for McIDAS map files
FormNode	getForms(Data data) Return the data forms that are compatible with a data object
boolean	isThisType(byte[] block) Determines if this is a USGS DEM file from the starting block
boolean	isThisType(String name) Determines if this is a USGS DEM file from the name
DataImpl	open(String id) Open the file specified by the string
DataImpl	open(URL url) Open the file specified by the URL
void	save(String id, Data data, boolean replace) Save a VisAD data object in this form

Methods inherited from class visad.data.Form

getMathType

Methods inherited from class visad.data.FormNode

getName

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

UsgsDemForm

public UsgsDemForm()

Construct a Form for reading in USGS DEM files

Method Detail

isThisType

public boolean isThisType(String name)

Determines if this is a USGS DEM file from the name

Specified by:

isThisType in interface FormFileInformer

Parameters:

name - name of the file

Returns:

true if it matches the pattern for USGS DEM files

isThisType

public boolean isThisType(byte[] block)

Determines if this is a USGS DEM file from the starting block

Specified by:

isThisType in interface FormFileInformer

Parameters:

block - block of data to check

Returns:

false - there is no identifying block in a USGS DEM file

getDefaultSuffixes

public String[] getDefaultSuffixes()

Get a list of default suffixes for McIDAS map files

Specified by:

getDefaultSuffixes in interface FormFileInformer

Returns:

valid list of suffixes

save

public void save(String id,
                 Data data,
                 boolean replace)
          throws BadFormException,
                 IOException,
                 RemoteException,
                 VisADException

Save a VisAD data object in this form

Specified by:

save in class FormNode

Throws:

UnimplementedException - - can't be done yet.

BadFormException

IOException

RemoteException

VisADException

add

public void add(String id,
                Data data,
                boolean replace)
         throws BadFormException

Add data to an existing data object

Specified by:

add in class FormNode

Throws:

BadFormException

open

public DataImpl open(String id)
              throws BadFormException,
                     IOException,
                     VisADException

Open the file specified by the string

Specified by:

open in class FormNode

Parameters:

id - string representing the path to the file

Returns:

a Data object representing the map lines.

Throws:

BadFormException

IOException

VisADException

open

public DataImpl open(URL url)
              throws BadFormException,
                     VisADException,
                     IOException

Open the file specified by the URL

Specified by:

open in class FormNode

Parameters:

url - URL of the remote map file

Returns:

a Data object representing the map lines.

Throws:

BadFormException

VisADException

IOException

getForms

public FormNode getForms(Data data)

Return the data forms that are compatible with a data object

Specified by:

getForms in class FormNode

Returns:

null