GXDBWRITE class¶
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class
GXDBWRITE
(handle=0)[source]¶ GXDBWRITE class.
The
GXDBWRITE
class is used to open and write to databases. Large blocks of data are split into blocks and served up sequentially to prevent the over-use of virtual memory when VVs or VAs are being written to channels. Individual data blocks are limited by default to 1 MB (which is user-alterable). Data less than the block size are served up whole, one block per line.-
add_block
(line)[source]¶ Add the current block of data.
- Parameters
line (int) – Line
New in version 9.0.
License: Geosoft Open License
Note: First, set up the data for each channel by copying values into the individual channel VVs and VAs.
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add_channel
(chan)[source]¶ Add a data channel to the
GXDBWRITE
object.- Parameters
chan (int) – Channel handle (does not need to be locked, but can be.)
- Returns
Channel index. Use for getting the correct
GXVV
orGXVA
object.- Return type
int
New in version 9.0.
License: Geosoft Open License
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commit
()[source]¶ Commit remaining data to the database.
New in version 9.0.
License: Geosoft Open License
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classmethod
create
(db)[source]¶ Create a
GXDBWRITE
object Add channels using theadd_channel
method.channel.New in version 9.0.
License: Geosoft Open License
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classmethod
create_xy
(db)[source]¶ Create a
GXDBWRITE
object for a XY-located data. Add channels using theadd_channel
method.New in version 9.0.
License: Geosoft Open License
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classmethod
create_xyz
(db)[source]¶ Create a
GXDBWRITE
object for a XYZ-located data. Add channels using theadd_channel
method.channelNew in version 9.0.
License: Geosoft Open License
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get_chan_array_size
(chan)[source]¶ Get the number of columns of data in a channel.
- Parameters
chan (int) – Index of channel to access.
- Returns
The number of columns (array size) for a channel
- Return type
int
New in version 9.0.
License: Geosoft Open License
Note: Regular channels have one column of data. Array channels have more than one column of data. This function should be called to determine whether to use
get_vv
orget_va
to access data for a channel.
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get_db
()[source]¶ Get the output
GXDB
handle from theGXDBWRITE
object.New in version 9.0.
License: Geosoft Open License
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get_v_vx
()[source]¶ Get the X channel
GXVV
handle.New in version 9.0.
License: Geosoft Open License
Note: Only available for the CreateXY or CreateXYZ methods. The
GXVV
is filled anew for each block served up.
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get_v_vy
()[source]¶ Get the Y channel
GXVV
handle.New in version 9.0.
License: Geosoft Open License
Note: Only available for the CreateXY or CreateXYZ methods. The
GXVV
is filled anew for each block served up.
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get_v_vz
()[source]¶ Get the Z channel
GXVV
handle.New in version 9.0.
License: Geosoft Open License
Note: Only available for the CreateXY or CreateXYZ methods. The
GXVV
is filled anew for each block served up. If the Z channel is an array channel, the returnedGXVV
is the “base”GXVV
of theGXVA
and contains all items sequentially.
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get_va
(chan)[source]¶ Get the
GXVA
handle for an array channel.New in version 9.0.
License: Geosoft Open License
Note: Call only for array (multi-column) channels. You can call the
get_chan_array_size
function to find the number fo columns in a given channel, or you can callGXVA.col
on the returnedGXVA
handle. TheGXVA
is filled anew for each block served up.
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get_vv
(chan)[source]¶ Get the
GXVV
handle for a channel.New in version 9.0.
License: Geosoft Open License
Note: Call only for single-column (regular) channels. You can call the
get_chan_array_size
function to find the number fo columns in a given channel. TheGXVV
is filled anew for each block served up.
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is_null
()[source]¶ Check if this is a null (undefined) instance
- Returns
True if this is a null (undefined) instance, False otherwise.
- Return type
bool
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test_func
(ra)[source]¶ Temporary test function.
New in version 9.0.
License: Geosoft Open License
Note: Designed to import the “Massive.xyz” file, which has data in the format “X Y Z Data”.
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