source: SH_SHM/trunk/help/read-seed.shm @ 206

! file read.shm
!      ========
!
! version 1, 13-Aug-94
!
! help text about menu option 'Read'
! K. Stammler, 13-Aug-94
!
Menu Entry  'Read'

Pops up Read MiniSEED Dialog Box.  This dialog box controls the input
of seismogram data given in MiniSEED format (data records only,
data compression with Steim-1 algorithm).  The box is divided into
four parts and the main button set.


--- part 1: station selection

Each station listed has a toggle button attached.  If the toggle button
is pressed (dark color) then the station is selected for reading, if
the button is released (bright color) the station is deselected.
For the convenience of the user there are two subset toggle buttons at
the bottom which select/deselect a subset of the stations with one
mouse click.


--- part 2: channel selection

The three toggle buttons 'Z', 'N', 'E' select the components to be
read from file.  The buttons can be selected independendly of each other.
The remaining radio button set selects the sample rate of the data
stream.  The requested sample rate must be available on disk otherwise
no data are read in.  This option does not perform any resampling.
The selected channel(s) refer to all stations selected above.


--- part 3: time selection

Controls start time and time span of reading.  The start time is
displayed in two text fields for date and time.  These text fields
are editable and the desired start time may be written into it in
the appropriate format.  Additionally there are 12 arrow buttons
above/below the text fields which increase/decrease the time displayed
by a specific amount.  The read time may also be called from a list
file.  The name of the file is displayed in the text field below the
start time.  A mouse click on this name opens the file selection box
to enable the user to switch to another file.  The default path used
in the file selection box can be set in the startup file using the
command 'shmsetup defpath_events <path>'.  The time files must
contain one time per line.  The user can step forward and backward in
the file using the two arrow buttons left and right to the file name
text field.  The second text field between these buttons shows the
current line (=time) number within the file.


--- part 4: general options

Keep Traces - Controls whether or not all old traces are deleted before
   reading new traces.  Traces are deleted if not selected.  This is
   default.

reads, readk - Special options for GRF data.

sfd-directory - Specifies the pathname where the SEED data directory
   file (sfdfile.sfd) can be found.  This file contains information
   about all available data streams.


--- main button set

Read Again - Read in seismogram data.  All event information and all
   phases are left unchanged.  A previously selected filter is applied
   automatically to the new traces.  Also a possibly requested rotation
   remains active.

Read New - Read in seismogram data and reset all parameters to default
   values.  Phase information is cleared as well as the event ID number.
   After reading the default filter (selectable with 'shmsetup
   default_filter <filter>') is applied.  Rotation information is
   cleared.  This option will be executed only if the analysis parameters
   are either saved (Menu option 'Final Parameters') or cancelled
   (Menu option 'Cancel Parameters').

Cancel - Close dialog box and leave everything unchanged.

Reset - Resets most of the dialog box items to default values.  These
   default values are currently not selectable.