Returns “NULL” if the task is not of type “costsens”.
getTaskCosts(task, subset = NULL)(Task) The task.
(matrix | NULL).
Other task: getTaskClassLevels,
getTaskData, getTaskDesc,
getTaskFeatureNames,
getTaskFormula, getTaskId,
getTaskNFeats, getTaskSize,
getTaskTargetNames,
getTaskTargets, getTaskType,
subsetTask