From c74a78450886fda02286b63b79e29f7bce87f1fd Mon Sep 17 00:00:00 2001
From: theazgra <theazgra@gmail.com>
Date: Mon, 18 Mar 2019 14:07:41 +0100
Subject: [PATCH] Histogram code.
---
.../czi-parser/compression/benchmark.cpp | 13 +++++++++++
czi-format/czi-parser/main.cpp | 4 ++++
.../czi-parser/utilities/vector_utilities.h | 22 +++++++++++++++++++
3 files changed, 39 insertions(+)
diff --git a/czi-format/czi-parser/compression/benchmark.cpp b/czi-format/czi-parser/compression/benchmark.cpp
index 2ac45f2..cd9529e 100644
--- a/czi-format/czi-parser/compression/benchmark.cpp
+++ b/czi-format/czi-parser/compression/benchmark.cpp
@@ -1,5 +1,18 @@
#include "benchmark.h"
+template <typename T>
+void save_histogram(const std::map<T, size_t> &histogram, const char *fileName)
+{
+ std::ofstream oStream = std::ofstream(fileName, std::ios::out);
+
+ for (const std::pair<T, size_t> &pair : histogram)
+ {
+ oStream << pair.first << ";" << pair.second << std::endl;
+ }
+ oStream.flush();
+ oStream.close();
+}
+
static void write_compression_report(const std::vector<BaseBenchmarkRecord> &results, const std::string &reportFile)
{
std::ofstream csvFile = std::ofstream(reportFile, std::ios::out);
diff --git a/czi-format/czi-parser/main.cpp b/czi-format/czi-parser/main.cpp
index b73ea25..b1c2075 100644
--- a/czi-format/czi-parser/main.cpp
+++ b/czi-format/czi-parser/main.cpp
@@ -29,6 +29,10 @@ void show_version()
int main(int argc, char **argv)
{
+ ByteArray ba = {10, 10, 10, 25, 65, 23, 59, 100, 23, 100, 25, 10};
+ auto histo = vecUtil::create_histogram(ba);
+ save_histogram(histo, "histogram.csv");
+
args::ArgumentParser argParser("CZI file tools", "Optional arguments are in `[]` necessary in `<>`.");
// Groups
args::Group cziFileGroup(argParser, "CZI file input - necessary.", args::Group::Validators::All);
diff --git a/czi-format/czi-parser/utilities/vector_utilities.h b/czi-format/czi-parser/utilities/vector_utilities.h
index 81edd9e..7e9a507 100644
--- a/czi-format/czi-parser/utilities/vector_utilities.h
+++ b/czi-format/czi-parser/utilities/vector_utilities.h
@@ -2,6 +2,7 @@
#include <vector>
#include <algorithm>
#include <limits>
+#include <map>
template <typename T>
struct MinMax
@@ -117,4 +118,25 @@ MinMax<T> find_min_max(const std::vector<T> &data)
}
return result;
}
+
+template <typename T>
+std::map<T, size_t> create_histogram(const std::vector<T> &data)
+{
+ std::map<T, size_t> histogram;
+
+ T value;
+ for (size_t i = 0; i < data.size(); i++)
+ {
+ value = data[i];
+
+ if (histogram.count(value) == 0)
+ {
+ histogram[value] = 0;
+ }
+
+ ++histogram[value];
+ }
+ return histogram;
+}
+
}; // namespace vecUtil
--
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