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rudesh
USA
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 Posted - 10/16/2007 : 4:06:35 PM
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Origin Version (Select Help-->About Origin): 7.5 or 8.0
Operating System:Windows server 2003
Hi,
I want to automate the creation of a simple 2D bar graph for ~200 individual tables in a SQL database. I have had a play with the ADO interface and am able to connect to my database and download tables and plot the required figure. I'd like to be able to automate this process.
Many Thanks,
Rudesh |
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larry_lan
China
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Posted - 10/17/2007 : 04:06:13 AM
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Hi Rudesh:
In Origin 8, you can use the database related functions to write an Origin C routine to auto import data and then plot graphs. Please refer to datasource.h in \OriginC\OriginLab\ folder of Origin .exe folder for database related function.
When you play with the ADO tool, you can save your query as an .ODQ file. Open this file by text editor (Windows Notepad), and then you will see the dataset connecting information. Use this information in your Origin C code. The following example will access the Origin sample database (\Samples\Import and Export\stars.mdb) and plot a scatter:
#include <Origin.h>
#include <..\originlab\datasource.c>
void test()
{
Worksheet wks=Project.ActiveLayer();
string sysPath = GetAppPath(true);
// Setting the database connecting information
string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + sysPath
+ "Samples\Import and Export\stars.mdb;Mode=Share Deny None;Extended Properties="
";Jet OLEDB:System database="";Jet OLEDB:Registry Path="";Jet OLEDB:Database Password="";Jet OLEDB:Engine Type=5;Jet OLEDB:Database Locking Mode=1;Jet OLEDB:Global Partial Bulk Ops=2;Jet OLEDB:Global Bulk Transactions=1;Jet OLEDB:New Database Password="";Jet OLEDB:Create System Database=False;Jet OLEDB:Encrypt Database=False;Jet OLEDB:Don't Copy Locale on Compact=False;Jet OLEDB:Compact Without Replica Repair=False;Jet OLEDB:SFP=False;Password=";
// Setting the query string
string strQuery = "Select Stars.DeclDeg, Stars.LightYears From Stars Where Stars.LightYears > 100";
if ( ! db_wks_set_query(wks, strConn, strQuery) )
{
out_str("Failed to put query information into worksheet");
return;
}
// Import data
db_wks_import(wks, 0, 0, true);
// Plot scatter
GraphPage gp;
gp.Create();
GraphLayer gl = gp.Layers();
Curve crv(wks, 0, 1);
gl.AddPlot(crv, IDM_PLOT_SCATTER);
gl.Rescale();
}
Thanks
Larry
OriginLab Technical Services
Edited by - larry_lan on 10/17/2007 04:25:08 AM |
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plot automation from tables in a database