contents.m

实现地震勘探中

% GEOPHYSICS_3
%
% Files
%   add_curve_type                      - Function adds curve type info to a log structure if a field "curve_type" exists
%   ds_add_header                          - Add one or more headers to a seismic or pseudo-well dataset.
%   pw_add_panel                           - Add a panel to a pseudowell dataset; replace it if it already exists
%   ds_add_parameter                       - Add a parameter to a structure; includes creating (or appending to) the 
%   alert                               - Function displays an alert message unless S4M.alert is set to false
%   alpha_trim4md                       - Compute boolean matrix such that "samples(bool(:,ii),:)" are in the 
%   alpha_trim4md_iter                  - Compute boolean matrix such that "samples(bool,:)" are in the 
%   apply_probe                         - Compute probe value by forming the inner product of the probe samples and
%   arma_filter                         - Function computes the coefficients of the numerator and the denominator of an
%   assign_fields                       - Copy fields from structure "newparam" to like-named fields of 
%   assign_input                        - Function matches keywords in cell array "arguments" to fields of "param", and 
%   assign_input4gui                    - Assign values to the fields of a structure
%   ava_approximation                   - Compute approximate amplitude vs angle of incidence from Vp, Vs, and density;
%   ava_approximation4model             - Compute coefficients of approximations to Zoeppritz equations from
%   bar3d                               - Draw 3D bars; coordinates are centers
%   bool4bootstrap                      - Compute a boolean matrix for bootstrap algorithm. The matrix has "nsamp" 
%   cell2num                            - Convert a cell array of numbers into a numeric array or 
%   cell2str                            - Function converts cell vector of strings to a string
%   chapman                             - Compute wave ewuation reflectoion coefficients
%   check_numeric                       - Check if string represents numeric variables and satisfies specified constraints
%   clock_pointer_off                   - Change cursor to arrow and delete "patience" message
%   clock_pointer_on                    - Change cursor to watch and send patience message
%   color2num                           - Convert string with color name to numeric RGB color
%   compute_net_sand_indicator          - Special-purpose function
%   compute_net_sand_probe              - Special-purpose function
%   contourplot                         - Plot matrix as a contour plot (see also "contourfplot")
%   contourplot1                        - Plot matrix as a filled or unfilled contour plot 
%   convert2matrix                      - Convert columnar data into matrix.
%   copy_fields                         - Function copies fields in dataset "dsin" to "dsout" if they do not 
%   copy_specific_fields                - Function copies fields in structure "dsin" specified in cell array "names"  
%   create_button4action                - Create a menu item to issue specific commands (e.g. keyboard, rehash)
%   create_figure_window                - Create a figure window 
%   create_format_string                - Create a format string for use in LAS-3 reader
%   create_seismic4different_nets       - Create a seismic dataset for principal-component determination or for 
%   cumquad                             - Function computes the numerical approximation to the indefinite 
%   ddid                                - Display Distribution ID of SeisLab
%   default_modelpar                    - Compute default values of the fields of structure modelpar which collects 
%   default_seismic_colormap            - Create the color matrix for the default seismic color display
%   delete_handles2delete               - Delete handles collected in field "handles2delete" of either global
%   determine_probe                     - 
%   dispclass                           - Function displays the class of every numeric field of a structure
%   display_cursor_location4seismic     - GUI tool
%   display_net_sand_indicator          - Special-purpose function
%   dsSize                              - Find the number of rowa and/or columns of the data matrix for the 
%   experimental_memsize                - INPUT
%   fig2eps                             - Export figure for use in reports
%   fig2pp                              - Export figure for use in PowerPoint
%   figure_export_menu                  - Creates a menu button on the figure with handle "figure_handle" (or
%   finalize_seismic_dataset            - 
%   fix_las_file_log                    - Perform error checking and other tasks for well log read fronm LAS file
%   freemem                             - Dispalys the size of the 10 largest contiguous memory blocks; works only on PC's
%   full_backus_average                 - Compute full Backus average including layer-induced Thomsen parameters
%   get_filename4r                      - Function interactively gets a file name with extension ext for reading a data set
%   get_filename4w                      - Function interactively gets a file name with extension ext for writing a data set
%   get_parameter                       - Get units of a parameter from a  dataset (seismic, log, etc.)
%   gross_and_net_samples2              - Algorithm 2
%   header_index1                       - Function outputs index of header in seismic structure "seismic".
%   histoplot1                          - Histogram plot (1-D)
%   info2label                          - Create label for axis annotation from two-element or three-element 
%   info4time                           - Create a standard cell row vector with info about the time axis
%   initiate_2d_tracking                - Initiate picking on a 2-d plot (no z-component)
%   interpf                             - Function interpolates in the frequency domain; 
%   interpret_las2                      - Interpret the lines of a file in LAS 3.0 format and create a well-log
%   interpret_las3                      - Interpret the lines of a file in LAS 3.0 format and create a well-log
%   iscomputer                          - Output logical variable (true of false) depending on whether or not the
%   isconstant                          - Function checks if all elements of array "a" are the same within
%   iscurve                             - Returns true if mnem is a curve mnemonic in log structure "wlog"
%   isnearinteger                       - Function checks if x is approximately integer (with tolerance "tol")
%   isnull                              - Check if field "null" of dataset "ds" exists and, if yes, if it is 
%   isnumber                            - Check if a string contains only numbers, spaces, commas, decimal points,
%   issame                              - True if vectors or cell arrays "a" and "b" have the same entries (but not 
%   istype                              - Check if structure has field "type" and if it matches the string "typ",
%   isyes                               - Check if input argument is the string 'yes' or the logical variable "true". 
%   ixline_from_cdpxy                   - Compute inline number and cross-line number from cdp-x and cdp-y
%   l_append                            - Function appends one log structure to another. 
%   l_assign_input                      - Function matches keywords in cell array "arguments" to fields of "param", and 
%   l_average                           - Function computes running average over specified log curves
%   l_check                             - Function checks if log structure set is consistent and complies with
%   l_combine                           - Combine two logs in such a way that the curves of the second log follow 
%   l_compare                           - Function plots curves from one or more logs onto one plot. If depth units or curve units differ
%   l_convert                           - Function converts a matrix of curve values, curve names, curve units of measurement, 
%   l_crossplot                         - Function makes crossplot of curve with mnemonic "mnem1" (x-axis) vs curve with
%   l_curve                             - Function manipulates curve(s) of a log structure
%   l_curve_math                        - Function creates new log curve using the mathematical expression contained in the
%   l_data                              - Create a synthetic well log for test and demo purposes; the log curves are
%   l_depth2index                       - Prepend a new column to the log curves. This curve is an index vector
%   l_depth2wb_depth                    - Change the depth coordinate to depth from water bottom; the function assumes 
%   l_elastic_impedance                 - Function computes elastic impedance log for given angles
%   l_extend                            - Function extends the depth range of a log structure by 
%   l_fill_gaps                         - Function interpolates across gaps in the log curves (null values) of all 
%   l_gc                                - Function extracts curve with mnemonic "mnem" from log data set "wlog"
%   l_gd                                - Get the description of the curve with mnemonic "mnem" from log data set "wlog".
%   l_gu                                - Get units of measurement of curve with mnemonic "mnem" from log data set "wlog"
%   l_histoplot_1d                      - Uses a curve of well log "wlog" to create a 1-D histogram
%   l_interpolate                       - Function interpolates null values of all curves specified by an optional list 
%   l_lithocurves                       - Function computes "logical" curves representing lithology. The curve values are
%   l_lithology_subset                  - Function extracts lithology-specific log values (i.e. log values associated 
%   l_lithoplot                         - Function plots log curves with lithology indicated by markers and/or color
%   l_merge                             - Function replaces the null values of one curve with the corresponding 
%   l_plot                              - Function plots log curves; 
%   l_plot1                             - Function plots log curves into a single plot window.
%   l_pwells2logs                       - Function converts a pseudo-well structure to a log structure vector
%   l_redefine                          - Function redefines one or more of the standard curve mnemonics (e.g. to make them the same as
%   l_reflection_coefficients           - Function computes reflection acoustic reflection coefficients in depth and
%   l_reflections                       - Function computes reflection coefficients; 
%   l_regression                        - Function creates new log curve using the mathematical expression contained in the
%   l_rename                            - Function replaces one or more curve mnemonics by new ones
%   l_resample                          - Function resamples all curves of a log. Gaps in log curves (NaNs) are 
%   l_rm_nulls                          - Function removes leading and trailing rows from log curves if they contain 
%   l_seismic_acoustic                  - Function computes seismic-relevant curves such as P-velocity and acoustic
%   l_seismic_elastic                   - Function computes seismic-relevant curves such as P-velocity, S-velocity, acoustic
%   l_select                            - Function retrieves subset of log from log structure
%   l_shale_sand_logs                   - Create sample logs of de-trended shale and sand properties;
%   l_sonic2time                        - Function computes two-way time by integrating sonic log and adds it to the input log structure.
%   l_sort                              - Sort curves of a log so that a specified curve increases monotonically;
%   l_switch_depth                      - Function replaces "depth" column (1st column) of the log structure with another column
%   l_tools                             - Without argument, function lists all functions that process log data.
%   l_trend_removal                     - Correct values of a particular curve to a particular depth, called 
%   l_unit_conversion                   - Function converts units of measurements of curves and parameters in
%   label_and_time_stamp                - Function creates time stamp and possibly a label on a plot
%   lf_dc_removal                       - Function removes a half-period sine function from a column vector
%   lfigure                             - Function creates a figure window in landscape mode with label and
%   list_header_mnemonics               - Create a cell array with all header mnemonics of a seismic data set, including
%   list_of_log_functions               - 
%   list_of_other_functions             - List of functions provided by others
%   list_of_overloaded_functions        - 
%   list_of_pdf_functions               - List of functions for creating/using/displaying probability distributions (used in pd_tools)
%   list_of_pseudowell_functions        - The four cell matrix columns are:
%   list_of_seismic_functions           - List of functions for creating/using/displaying seismic datasets (used in s_tools)
%   list_of_support_functions           - List of support functions for SeisLab
%   list_of_table_functions             - List of functions for creating/using/displaying tables (used in t_tools)
%   m_add_trends                        - Function adds lithology-specific trends to rock properties of a model
%   markov_transition                   - Function creates a sequence of state vectors from an initial state 
%   measure_of_blockyness               - Function takes sand thicknesses in a sand/shale package and computes a 
%   measure_of_rattyness                - Function takes sand thichicknesses in a sand/shale package and computes a 
%   memblock                            - Compute the size of the largest contiguous memory block; works only on PC's
%   mfilter_d2d                         - Function computes a single filter "wfilter" which converts each column of s1 into the 
%   mfilter_t2d                         - Function computes filters "wfilters" which convert a single trace s1 into the 
%   mfilter_t2t                         - Function computes filters "filter" which converts each column of s1 into the 
%   mnem2tex                            - Function substitutes TeX-style mnemonics for input mnemonics (used for