void discretize (double threshold)
{
if (b_zscore == 0)
{
zscore ();
}
long i, j;
for (j = 0; j < nvar; j++)
{
register double tmpf;
for (i = 0; i < nsample; i++)
{
tmpf = data2d[i][j];
if (tmpf > threshold)
tmpf = 1;
else
{
if (tmpf < -threshold)
tmpf = -1;
else
tmpf = 0;
}
data2d[i][j] = tmpf;
}
}
b_discetize = 1;
}
void discretize (double threshold, int b_discretize)
{
long indExcludeColumn=0; //exclude the first column
if (b_zscore == 0)
{
zscore (indExcludeColumn, b_discretize); //exclude the first column
}
if (!b_discretize)
return; // in this case, just generate the 2D array
long i, j;
for (j = 0; j < nvar; j++)
{
if (j==indExcludeColumn)
{
continue;
}
register double tmpf;
for (i = 0; i < nsample; i++)
{
tmpf = data2d[i][j];
if (tmpf > threshold)
tmpf = 1;
else
{
if (tmpf < -threshold)
tmpf = -1;
else
tmpf = 0;
}
data2d[i][j] = tmpf;
}
}
b_discetize = 1;
}
bool redis_zset::zscore(const char* key, const char* member, double& result)
{
return zscore(key, member, strlen(member), result);
}