3.7.5.100 Wbk.DC

Wbk-DC-obj

The wbk.DC object has properties and methods related to the Data Connector attached to the workbook. The workbook object can be referred to using either "wbook" or "wbk".

Properties

newbook;
wbook.dc.add("HTML");
wbook.dc.source$="https://www.extremeweatherwatch.com/cities/boston/year-1993";
wks.dc.sel$="Tables/_2";
wks.dc.import();

Methods

wbk.dc.add("HDF",1);

int bValid = wbook.dc.Compatible(myfile$);

wbk.DC.newsheet("Coal") //connect to Coal sheet as a clean new sheet
wbk.DC.newsheet("Coal", 1) //connect to Coal sheet with same calculation on Oil sheet

wbk.DC.newsheet("[Book1]Sensor02", 1)

Examples

EX1

Below codes import a HTML table on a wiki webpage to Origin worksheet.

newbook;
wbook.dc.add("HTML");
urllink$="https://en.wikipedia.org/wiki/List_of_metropolitan_statistical_areas";
wks.dc.source$={"isAdv":0,"bas":{"url":"%(urllink$)"},"adv":{"urlParts":["",""],"cmdTimeout":"","hdrParams":[]}};
wks.DC.Sel$=Tables/_1;
wks.dc.import();

EX2

The following example shows how to import an Excel file by Data Connector.

newbook;
wbook.dc.add("Excel");
wks.dc.source$=System.path.program$+"Samples\Import and Export\United States Energy (1980-2013).xls";
wks.dc.sel$="Natural Gas";
wks.dc.import();
//set column label rows
worksheet -s 0 1 0 1; 
wks.setaslabel(C, -1, 0, 0);
wks.setaslabel(L, -1, 0, 0);
wks.setaslabel(U, -1, 0, 0);

EX3

This example uses the Origin Connector to import data from another Origin project by running a query (information on the SQL-like query language supported by the Origin Connector can be found here).

// Origin project file location:
string path$ = "C:\temp\mydata.opju";
// Create new workbook in current project
newbook;
// Connect to the desired Origin project using the Origin Data Connector
wbook.dc.ADD("Origin");
wks.dc.source$ = path$;
// Specify query string to pull all X columns that have long name of "alpha"
wks.dc.sel$=Select Column from Project where (Column_LName like "alpha" AND Column_Type = X);
wks.dc.import();

EX4

This example uses the NetCDF Connector to do partial import of web-stored multi-dimensional data in a .nc file.

newbook mat:=1;
wbk.dc.add("NetCDF");
wks.dc.source$="https://psl.noaa.gov/thredds/fileServer/Datasets/cpc_us_precip/precip.V1.0.mon.mean.nc";
// import z=1 to end, read 1 skip 11; lon shift, lat flip, formula v*0.0393701
wks.dc.sel$=NetCDF/precip[1:0|1-11][y#][x/2]v*0.0393701;
wks.dc.import();

EX5

The following example shows how to specify an import filter in the same folder as your data file.

wbook.dc.add("Import Filter");
wks.dc.source$="C:\2016\Samples\Import and Export\S15-125-03.dat"; // connect to .dat file
wks.dc.sel$="test1.oif"; //use import filter "test1.oif" in the data folder - see Note
wks.dc.import();

Note: You can refer to an import filter saved to UFF\Filters using the %Y string register as in, for example, wks.dc.sel$="%YFilters\test1.oif";

EX6

The following 2 examples show you how to import files with multiple sheets

// import Excel file with two sheets with same headings
string fname$=system.path.program$ + "Samples\Import and Export\United States Energy (1980-2013).xls";
wbook.dc.add("Excel");
wks.dc.source$ = fname$;
Tree tr1 = wks.dc.Optn$;
tr1.Settings.mainheader = 2;
tr1.Settings.labels.SetAttribute("Use",1);
tr1.Settings.labels.longname=1;
tr1.Settings.labels.unit=2;
tr1.tostring(wks.dc.optn$);
wks.dc.sel$ = "Oil";
wks.dc.import();
//now connect to another sheet named "Coal"
wbook.dc.Newsheet("Coal");

//import one sheet in an OPJU file, normalize 4th column
//Then import a new sheet by duplicating the current sheet so normalization is done as well
string fname$=system.path.program$ + "Samples\tutorial data.opju";
wbook.dc.add("Origin");
wks.dc.source$ = fname$;
wks.dc.sel$ = "[book6]pre-Electrical Open";
wks.dc.import();
rnormalize -r 1 irng:=4 method:=range100; //normalize 4th column

//Import "post-Electrical Open" sheet in OPJU by duplicating same operation on current "pre-Electrical Open" sheet
//2nd argument 1 is new in Origin 2024b
wbook.dc.Newsheet("[book6]post-Electrical Open",1);

EX7

The following 3 examples show you how to import tables from web.

//import ''table _2'' and then append ''table _9'' as new columns in the same worksheet
newbook;
wbook.dc.add("HTML");
wbook.dc.source$="https://www.extremeweatherwatch.com/cities/boston/year-1993";
wks.dc.sel$="Tables/_2";
wks.dc.import();
wks.DC.flags=0; //0: append new columns, 256: append new rows.
wks.dc.add("Tables/_9");


//import multiple tables in same sheet, for each table only import 2:3 columns. 
//table name only from 2nd char on and show as calendar 3 char month format 
newbook;
wbook.dc.add("HTML");
wbook.dc.source$="https://www.extremeweatherwatch.com/cities/boston/year-1993";
wks.dc.sel$="Tables/_2|Tables/_3|Tables/_4";
Tree tr = wks.dc.optn$;
tr.partial_col$="2 3";
tr.nameoptn$="2:0";//Keep table name from 2nd char on. Use "2" to show 2nd char only
ToString(wks.dc.optn$);
wks.dc.import();
wlabel ty:="table" fmt:="CM0"; //show calendar month Feb, Mar, Apr in Table row


//import multiple tables into same sheet by appending row after row
newbook;
wbook.dc.add("HTML");
wbook.dc.source$="https://www.extremeweatherwatch.com/cities/boston/year-1993";
wks.dc.sel$="Tables/_2|Tables/_3|Tables/_4";
wks.dc.flags=256;
Tree tr = wks.dc.optn$;
tr.partial_col$="2 3";
tr.ToString(wks.dc.optn$);
wks.dc.import();

See Also

Wks, Wks.DC