two new sample utils

utils/Makefile.am

@@ -14,16 +14,26 @@ if CXX_INTEL
 endif
 endif
 
-bin_PROGRAMS =    \
-    latan_sample_read\
+bin_PROGRAMS =            \
+    latan_make_fake_sample\
+    latan_sample_combine  \
+    latan_sample_read     \
     latan_resample
 
-latan_sample_read_SOURCES = sample_read.cpp
-latan_sample_read_CFLAGS  = -g -O2
-latan_sample_read_LDFLAGS = -L../lib/.libs -lLatAnalyze
+latan_make_fake_sample_SOURCES  = make_fake_sample.cpp
+latan_make_fake_sample_CXXFLAGS = $(COM_CXXFLAGS)
+latan_make_fake_sample_LDFLAGS  = -L../lib/.libs -lLatAnalyze
 
-latan_resample_SOURCES = resample.cpp
-latan_resample_CFLAGS  = -g -O2
-latan_resample_LDFLAGS = -L../lib/.libs -lLatAnalyze
+latan_sample_combine_SOURCES  = sample_combine.cpp
+latan_sample_combine_CXXFLAGS = $(COM_CXXFLAGS)
+latan_sample_combine_LDFLAGS  = -L../lib/.libs -lLatAnalyze
+
+latan_sample_read_SOURCES  = sample_read.cpp
+latan_sample_read_CXXFLAGS = $(COM_CXXFLAGS)
+latan_sample_read_LDFLAGS  = -L../lib/.libs -lLatAnalyze
+
+latan_resample_SOURCES  = resample.cpp
+latan_resample_CXXFLAGS = $(COM_CXXFLAGS)
+latan_resample_LDFLAGS  = -L../lib/.libs -lLatAnalyze
 
 ACLOCAL_AMFLAGS = -I .buildutils/m4

utils/make_fake_sample.cpp

@@ -0,0 +1,55 @@
+/*
+ * make_fake_sample.cpp, part of LatAnalyze 3
+ *
+ * Copyright (C) 2013 - 2015 Antonin Portelli
+ *
+ * LatAnalyze 3 is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * LatAnalyze 3 is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with LatAnalyze 3.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <iostream>
+#include <LatAnalyze/AsciiFile.hpp>
+#include <LatAnalyze/RandGen.hpp>
+
+using namespace std;
+using namespace Latan;
+
+int main(int argc, char *argv[])
+{
+    Index  nSample;
+    double val, err;
+    string outFileName;
+
+    if (argc != 5)
+    {
+        cerr << "usage: " << argv[0];
+        cerr << " <central value> <error> <nSample> <output file>" << endl;
+
+        return EXIT_FAILURE;
+    }
+    val         = strTo<double>(argv[1]);
+    err         = strTo<double>(argv[2]);
+    nSample     = strTo<Index>(argv[3]);
+    outFileName = argv[4];
+
+    RandGen    gen;
+    DMatSample res(nSample, 1, 1);
+
+    FOR_STAT_ARRAY(res, s)
+    {
+        res[s](0, 0) = gen.gaussian(val, err);
+    }
+    Io::save<DMatSample, AsciiFile>(res, outFileName);
+
+    return EXIT_SUCCESS;
+}

utils/sample_combine.cpp

@@ -0,0 +1,135 @@
+/*
+ * sample_combine.cpp, part of LatAnalyze 3
+ *
+ * Copyright (C) 2013 - 2014 Antonin Portelli
+ *
+ * LatAnalyze 3 is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * LatAnalyze 3 is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with LatAnalyze 3.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <iostream>
+#include <libgen.h>
+#include <unistd.h>
+#include <LatAnalyze/AsciiFile.hpp>
+#include <LatAnalyze/CompiledFunction.hpp>
+
+using namespace std;
+using namespace Latan;
+
+static void usage(const string &cmdName)
+{
+    cerr << "usage: " << cmdName;
+    cerr << " [-o <output sample>]";
+    cerr << " <n> <function> <sample 1> ... <sample n>";
+    cerr << endl;
+    exit(EXIT_FAILURE);
+}
+
+int main(int argc, char *argv[])
+{
+    // argument parsing ////////////////////////////////////////////////////////
+    string         cmdName, outFileName = "", code;
+    vector<string> fileName;
+    int            c;
+    unsigned int   n = 0;
+
+    opterr = 0;
+    cmdName = basename(argv[0]);
+    while ((c = getopt(argc, argv, "o:")) != -1)
+    {
+        switch (c)
+        {
+            case 'o':
+                outFileName = optarg;
+                break;
+            case '?':
+                cerr << "error parsing option -" << char(optopt) << endl;
+                usage(cmdName);
+                break;
+            default:
+                usage(cmdName);
+                break;
+        }
+    }
+    if (argc - optind >= 1)
+    {
+        n = strTo<unsigned int>(argv[optind]);
+        if (argc - optind == static_cast<int>(n + 2))
+        {
+            fileName.resize(n);
+            code = argv[optind + 1];
+            for (unsigned int i = 0; i < n; ++i)
+            {
+                fileName[i] = argv[optind + 2 + i];
+            }
+        }
+        else
+        {
+            usage(cmdName);
+        }
+    }
+    else
+    {
+        usage(cmdName);
+    }
+
+    // data loading ////////////////////////////////////////////////////////////
+    vector<DMatSample> sample(n);
+    Index              nSample;
+
+    cout << "-- loading data..." << endl;
+    for (unsigned int i = 0; i < n; ++i)
+    {
+        sample[i] = Io::load<DMatSample, AsciiFile>(fileName[i]);
+        if (i == 0)
+        {
+            nSample = sample[i].size();
+        }
+        else if (sample[i].size() != nSample)
+        {
+            cerr << "error: number of sample mismatch (between '";
+            cerr << fileName[0] << "' and '" << fileName[i] << "')" << endl;
+
+            return EXIT_FAILURE;
+        }
+    }
+
+    // combine data ////////////////////////////////////////////////////////////
+    DoubleFunction f = compile(code, n);
+    DVec           buf(n);
+    DMatSample     result(sample[0]);
+
+    cout << "-- combining data..." << endl;
+    FOR_STAT_ARRAY(result, s)
+    {
+        FOR_MAT(result[s], i, j)
+        {
+            for (unsigned int k = 0; k < n; ++k)
+            {
+                buf[k] = sample[k][s](i,j);
+            }
+            result[s](i, j) = f(buf);
+        }
+    }
+
+    // output //////////////////////////////////////////////////////////////////
+    cout << scientific;
+    cout << "central value:\n"      << result[central]               << endl;
+    cout << "standard deviation:\n" << result.variance().cwiseSqrt() << endl;
+    if (!outFileName.empty())
+    {
+        Io::save<DMatSample, AsciiFile>(result, outFileName);
+    }
+
+    return EXIT_SUCCESS;
+}