ChartDirector Ver 3.1 (PHP Edition Edition)

ArrayMath


The ArrayMath class is a utility class used to perform array computations.

MethodInheritedDescription
new ArrayMath(Self)Create an ArrayMath object and initialize it with the given array.
add(Self)Add an array to the ArrayMath object.
add2(Self)Add a number to every element of the ArrayMath object.
sub(Self)Subtract an array from the ArrayMath object.
sub2(Self)Subtract a number from every element of the ArrayMath object.
mul(Self)Multiply an array to the ArrayMath object.
mul2(Self)Multiply a number to every element of the ArrayMath object.
div(Self)Divide the ArrayMath object by the given array.
div2(Self)Divide every element of the ArrayMath object by the given number.
delta(Self)Subtract each element of the ArrayMath object by an earlier element in the same ArrayMath object.
abs(Self)Replace each element of the ArrayMath object by its absolute value.
acc(Self)Replace each element of the ArrayMath object by the accumulated total of its previous element (including itself).
selectGTZ(Self)Select the elements of the ArrayMath object by checking if the elements of the given decisionArray is greater than zero.
selectGEZ(Self)Select the elements of the ArrayMath object by checking if the elements of the given decisionArray is greater than or equal to zero.
selectLTZ(Self)Select the elements of the ArrayMath object by checking if the elements of the given decisionArray is less than zero.
selectLEZ(Self)Select the elements of the ArrayMath object by checking if the elements of the given decisionArray is less than or equal to zero.
selectEQZ(Self)Select the elements of the ArrayMath object by checking if the elements of the given decisionArray is equal to zero.
selectNEZ(Self)Select the elements of the ArrayMath object by checking if the elements of the given decisionArray is not equal to zero.
selectStartOfHour(Self)Select the elements of the ArrayMath object that represents a different hour from the previous element.
selectStartOfDay(Self)Select the elements of the ArrayMath object that represents a different day from the previous element.
selectStartOfWeek(Self)Select the elements of the ArrayMath object that represents a different week from the previous element.
selectStartOfMonth(Self)Select the elements of the ArrayMath object that represents a different month from the previous element.
selectStartOfYear(Self)Select the elements of the ArrayMath object that represents a different year from the previous element.
trim(Self)Trim the ArrayMath object by keeping only some elements in the middle.
insert(Self)Insert the elements of an array to the ArrayMath object.
insert2(Self)Insert some constant elements to the ArrayMath object.
replace(Self)Find elements that are equal to a given value and replace it with another value.
movAvg(Self)Replace each element of the ArrayMath object by its moving average.
expAvg(Self)Replace each element of the ArrayMath object by its exponential average.
movMed(Self)Replace each element of the ArrayMath object by its moving median.
movPercentile(Self)Replace each element of the ArrayMath object by its moving percentile.
movMax(Self)Replace each element of the ArrayMath object by its moving maximum.
movMin(Self)Replace each element of the ArrayMath object by its moving minimum.
movStdDev(Self)Replace each element of the ArrayMath object by its moving standard deviation.
movCorr(Self)Replace each element of the ArrayMath object by the moving correlation with another array or with itself.
lowess(Self)Fit a curve through the data points in the ArrayMath object using the LOWESS algorithm.
lowess2(Self)Fit a curve through the data points in the ArrayMath object using the LOWESS algorithm, where the spacing of the data points is supplied by the given array.
result(Self)Get the content of the ArrayMath object as a normal array to be used in other ChartDirector API.
max(Self)Get the maximum value of the elements of the ArrayMath object.
min(Self)Get the minimum value of the elements of the ArrayMath object.
avg(Self)Get the average value of the elements of the ArrayMath object.
sum(Self)Get the total value of the elements of the ArrayMath object.
med(Self)Get the median value of the elements of the ArrayMath object.
percentile(Self)Get the required percentile value of the elements of the ArrayMath object.
maxIndex(Self)Get the index of the maximum value element of the ArrayMath object.
minIndex(Self)Get the index of the minimum value element of the ArrayMath object.

(1059, '1999-03-01', '371', '635', '722');