NaN-toolbox

            This toolbox is meanly ported from the nan-toolbox for matlab/octave.

Comparison of thrownan and nan_toolbox
======================================
Performance:

size 5000 x 10: sumskipnan: 0.001 sec, sum(thrownan()) 0.002 sec
size 5000 x 50: sumskipnan: 0.005 sec, sum(thrownan()) 0.014 sec
size 5000 x 100: sumskipnan: 0.010 sec, sum(thrownan()) 0.025 sec
size 5000 x 150: sumskipnan: 0.015 sec, sum(thrownan()) 0.039 sec
size 5000 x 200: sumskipnan: 0.018 sec, sum(thrownan()) 0.051 sec

sumskipnan is 2.8 times faster then sum(thrownan()).

The second disadvantage of thrownan is, that a matrix is transformed into a
vector:

-->size(d)
 ans  =
 
    5000.    200.  
 
-->size(thrownan(d))
 ans  =
 
    1000000.    1. 



Changelog:
=========

1.2.2
 - prepare toolbox for scilab 5.4
 - some bug fixes
1.2.1
 - remove xtpopen, now it should build under linux
1.2
 - rename every function to nan_*
1.1
 - some functions are added
 - help files and demos are improved
1.0
 - first release of NaN - toolbox

Functions:
===========

Data Correlation and Covariance
  "nan_covm"
  "nan_ecovm"
  "nan_decovm"
  "nan_xcorr"
  "nan_xcorr2"
  "nan_conv"
  "nan_conv2"
  "nan_xcov"
  "nan_xcovf"
  "nan_conv2nan"
  "nan_cor"        
  "nan_cov"         
  "nan_corrcoef"
  "nan_corrcov"
  "nan_rankcorr"
  "nan_partcorrcoef"
  "nan_tiedrank"

Descriptive Statistics

"nan_mean"
  "nan_mean"
  "nan_var"                 
  "nan_std"  
  "nan_median" 
  "nan_iqr"     
  "nan_trimmean"  
  "nan_center"    
  "nan_geomean"   
  "nan_detrend"    
  "nan_moment"  
  "nan_range"    
  "nan_medAbsDev"
  "nan_sem"
  "nan_meansq"
  "nan_sumsq"
  "nan_mad"
  "nan_rms"
  "nan_statistic"
  "nan_skewness"
  "nan_kurtosis"
  "nan_zscore"
  "nan_zScoreMedian"
  "nan_meanAbsDev" 
  "nan_harmmean"
  "nan_spearman"
  "nan_ranks"
  "nan_quantile"    
  "nan_prctile"
  "nan_percentile"
  "nan_trimean"
  "nan_meandev"
  "nan_ecdf"
  "nan_coef_of_variation"
  "nan_hist2res"
  "nan_histo"
  "nan_histo2"
  "nan_histo3"
  "nan_histo4"
  "nan_histc"
  "nan_grpstats"
  "nan_y2res"

statistical Visualization

  "nan_bland_altmann"
 "nan_cdfplot"
  "nan_gscatter"
  "nan_boxplot"
  "nan_normplot"
  "nan_andrewsplot"
  "nan_hist"
  "nan_ecdfhist"
  "nan_fscatter3"
  "nan_plotmatrix"
  "nan_gplotmatrix"
  "nan_parallelcoords"
  "nan_errorb"
  "nan_errorbar"
  "nan_nhist"

hypothesis Tests
  "nan_ttest"
  "nan_ttest2"

Classification
"nan_train_sc"
"nan_test_sc"
"nan_classify"
"nan_xval"
"nan_kappa"
"nan_train_lda_sparse"
"nan_fss"
"nan_cat2bin"
"nan_row_col_deletion"
"nan_mahal"
"nan_rocplot"
"nan_svmrocplot"
"nan_confusionmat"
"nan_partest"
"train"
"predict"
"svmtrain"
"svmpredict"

cluster Analysis
"nan_kmeans"

utility functions
 "sumskipnan"
  "nan_postpad"
  "nan_prepad"
  "nan_fft"
  "nan_ifft"
  "flag_nans_occured"
  "flag_impl_skip_nan"
  "flag_accuracy_level"
  "flag_impl_significance"
  "nan_grp2idx"
  "nan_ismember"
   "nan_unique"
   "nan_mgrp2idx"
   "nan_accumarray"
   "nan_flix"
  "str2array"