# 2.2.3.8.20 Matrix::SetYMin

## Description

Set the Y coordinate associated with the first row of the matrix.

## Syntax

BOOL SetYMin( double dYMin )

## Parameters

dYMin
[input] Input Y coordinate of first row

## Return

Returns TRUE on success and FALSE on failure.

## Examples

EX1

// Set and get the Y coordinate of the first row of a matrix
void Matrix_SetYMin_ex1()
{
// This sample code will print a message like below:
// Target matrix is Matrix1.
// Setting Y min value succeeded.
// Obtained Y min value is -1.23457e+008
// Check Y min value by Matrix:Set Dimensions menu command if it is -1.234570e+008.
//
BOOL rc;

double dYMin;
matrix<double> mat1 = {
{1,  2},
{3,  4},
{5,  6}
};

MatrixPage MatPg1;
MatPg1.Create("Origin");
MatrixLayer MatLy1 = MatPg1.Layers(0);
Matrix Mat1(MatLy1);
Mat1 = mat1;
printf("  Target matrix is %s.\n",Mat1.GetName());

rc=Mat1.SetYMin(-123.4567E6);  // Use SetYMin to set the Y coordinate of last row
if(!rc) {
printf("  Error: SetYMin failed.\n");
return;
}
else printf("  Setting Y min value succeeded.\n");
dYMin = Mat1.GetYMin();   // Use GetYMin to get the Y coordinate of last row
printf("  Obtained Y min value is %g\n", dYMin); // Print out coordinate
printf("  Check Y min value by Matrix:Set Dimensions menu command if it is %e.\n",dYMin);
}

## Remark

In addition to the values displayed in the cells of an internal Origin matrix (nominally Z values), Origin matrices map X coordinate values to the columns and Y coordinate values to the rows of the matrix. The SetYMin function sets the Y coordinate associated with the first row of the matrix.