/**
* @brief Copies the sorted inputworkspace into the output workspace without
* using clone because of how histograms are supported, for the Y Axis and the E
* Axis.
*
* @param workspaceIndicies the sorted vector of indicies
* @param inputWorkspace the unsorted input workspaces
* @param outputWorkspace the empty output workspace
* @param specNum the spectrum number being copied into
* @param isAProperHistogram whether or not it has been determined to be a valid
* histogram earlier on.
*/
void SortXAxis::copyYandEToOutputWorkspace(
std::vector<std::size_t> &workspaceIndicies,
const Mantid::API::MatrixWorkspace &inputWorkspace,
Mantid::API::MatrixWorkspace &outputWorkspace, unsigned int specNum,
bool isAProperHistogram) {
// If Histogram data find the biggest index value and remove it from
// workspaceIndicies
if (isAProperHistogram) {
auto lastIndexIt =
std::find(workspaceIndicies.begin(), workspaceIndicies.end(),
inputWorkspace.y(specNum).size());
workspaceIndicies.erase(lastIndexIt);
}
auto &inSpaceY = inputWorkspace.y(specNum);
for (auto workspaceIndex = 0u;
workspaceIndex < inputWorkspace.y(specNum).size(); workspaceIndex++) {
outputWorkspace.mutableY(specNum)[workspaceIndex] =
inSpaceY[workspaceIndicies[workspaceIndex]];
}
auto &inSpaceE = inputWorkspace.e(specNum);
for (auto workspaceIndex = 0u;
workspaceIndex < inputWorkspace.e(specNum).size(); workspaceIndex++) {
outputWorkspace.mutableE(specNum)[workspaceIndex] =
inSpaceE[workspaceIndicies[workspaceIndex]];
}
}
/**
* @brief Determines whether it is a valid histogram or not.
*
* @param inputWorkspace the unsorted input workspace
* @return true if it is a valid histogram else produce a runtime_error
* @return false if it is not a histogram, and is thus point data
*/
bool SortXAxis::determineIfHistogramIsValid(
const Mantid::API::MatrixWorkspace &inputWorkspace) {
// Assuming all X and Ys are the same, if X is not the same size as y, assume
// it is a histogram
if (inputWorkspace.x(0).size() != inputWorkspace.y(0).size()) {
// The only way to guarantee that a histogram is a proper histogram, is to
// check whether each data value is in the correct order.
if (!isItSorted(std::greater<double>(), inputWorkspace)) {
if (!isItSorted(std::less<double>(), inputWorkspace)) {
throw std::runtime_error("Data entered looks like a histogram, but is "
"not a valid histogram");
}
}
return true;
}
return false;
}