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lboyer
Posts |
 Posted - 10/04/2007 : 5:14:55 PM
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Origin Version (Select Help-->About Origin): 7.5
Operating System: WinXp
Hi,
I want to do some automations for collected data. I have never used Labtalk nor OriginC before but I know a few about C language.
I want to import data (*.dat) files in Origin, make some changes in the files then plot them.
Here is an sample of one the data files:
300e-3
0.005
-21.728515625
-21.66748046875
-21.6064453125
-21.66748046875
-21.66748046875
-21.66748046875
-21.6064453125
-21.66748046875
The first line is not used. The second line is a step. I want to create an X column in which the first row contains 1*0.005, the second 2*0.005 and so on. The remaining lines (from -21.728515625 to the end) will be placed on an Y column. I also want to perform other tasks on the data files. I have managed to do this using Labtalk scripts in the import wizard an OriginC function :
Labtalk script
wks.addcol(Offset);
del col(b);
%z=E:\**\Prog_MOT.c;
// Now load, compile and build the file
iErr = run.LoadOC("%z");
// If compile/build failed, report and quit
if(0 != iErr)
{
type -b Could not load and compile Origni C file to perform post-processing.;
break;
}
// Compile/build was successful - call the main OC function to perform post-processing
hello1();
OriginC function :
void hello1()
{
// Get active page and declare worksheet page object
WorksheetPage wpg = Project.Pages();
// Delcare worksheet object and datasets from 1st two columns of the worksheet
Worksheet wks(wpg.GetName());
Dataset dsX(wks, 0);
Dataset dsY(wks, 1);
Dataset dsZ(wks, 2);
wks.Columns(1).SetWidth(10);
wks.Columns(2).SetWidth(10);
// Copy ColA in ColB
dsY = dsX;
// Convert current in ColB from A to pA
dsY = dsY*0.000000000001;
// Set Timeline in ColA
dsX=0.005;
for (int ii = 0; ii < dsX.GetSize();ii++) {
dsX[ii] = ii*0.005;
}
// Cancel the offset of the measurement
// Get the first 5 points of the measurement, determine an average value of the first 5 points
float ave_point = 0, sum = 0;
ii = 0;
for( ii = 0; ii < 5; ii++)
sum = sum + dsY[ii];
ave_point = sum / ii;
//printf(" Courant de fuite : %e \n", ave_point);
// Substract this average value from all the measured points
ii = 0;
for( ii = 0; ii < dsY.GetSize(); ii++)
dsY[ii] = dsY[ii] - ave_point;
//Create a new column containing the offset value
dsZ = ave_point;
}
These scripts work, but is there a way to do this more efficiently?
Also, I want to generate a graph for these data in the following way:
After being imported, I will manually place the worksheets in subfolders. Then I want to generate a graph containing all the data from a subfolder into this subfolder. Below is a function I have made:
void all_curves_in_a_graph()
{
// Set up name of custom template to be used for creating a graph
string strGraphTemplateName = LabTalk.System.Path.Program$
+ "E:\\**\\Graph_template_MOT.otp";
// Create a graph using custom template
GraphPage grphData;
int nOptionG = CREATE_VISIBLE_SAME; // visibility is that of the source worksheet
bool bRetG = grphData.Create(strGraphTemplateName, nOptionG);
// Declare active layer in current graph page
GraphLayer grphLayer = grphData.Layers();
// Count worksheets pages in the project
int nCount = 0;
foreach(WorksheetPage wp in Project.WorksheetPages)
{
nCount++;
}
printf("\n total number of worksheets: %d",nCount);
// Get the WorksheetPages name:
for(int bb = 0; bb< nCount; bb++) {
WorksheetPage pg = Project.WorksheetPages(bb);
Worksheet wks(pg.GetName());
// Declare a curve object using x,y columns of worksheet
Curve crvData(wks, 0, 1);
// Plot data curve to active layer
int nPlot = grphLayer.AddPlot(crvData, IDM_PLOT_LINE);
grphLayer.Rescale();
}
grphLayer.LT_execute("legend");
// Group all the plots in the layer into one group.
// the graph layer needs to be initialized:
printf("\n");
printf("%d Courbes tracees", bb);
grphLayer.GroupPlots(0);
out_str(grphLayer.GetName());
printf("done");
//
}
The problem is that this function always generates a graph for all datasheets in the project.
Can you please help me? |
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lboyer
Posts |
Posted - 10/05/2007 : 06:06:44 AM
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I have managed to solve my problem.
The following code generates a graph for each worksheets in the active subfolder.
void graph2()
{
Folder fld = Project.ActiveFolder();
string str;
int i;
// Set up name of custom template to be used for creating a graph
string strGraphTemplateName = LabTalk.System.Path.Program$
+ "E:\**\\Graph_template_MOT.otp";
// Create a graph using custom template
GraphPage grphData;
int nOptionG = CREATE_VISIBLE_SAME; // visibility is that of the source worksheet
bool bRetG = grphData.Create(strGraphTemplateName, nOptionG);
// Declare active layer in current graph page
GraphLayer grphLayer = grphData.Layers();
foreach(PageBase pb in fld.Pages)
{
str = pb.GetName();
if( pb.GetType()==EXIST_WKS )
{
i++;
printf("\n nom du wks: %s", str);
Worksheet wks(pb.GetName());
// Declare a curve object using x,y columns of worksheet
Curve crvData(wks, 0, 1);
// Plot data curve to active layer
int nPlot = grphLayer.AddPlot(crvData, IDM_PLOT_LINE);
}
}
grphLayer.Rescale();
grphLayer.LT_execute("legend");
grphLayer.GroupPlots(0);
}
Note that the path of the graph template has been suppressed for privacy purposes. |
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automation and plot graph from subfolder