diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0e7aee4..3ff2735 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,7 +5,7 @@ project(GCTL_SEISMIC VERSION 1.0)
 include(CMakePackageConfigHelpers)
 
 # 添加编译选项
-option(GCTL_SEISMIC_MATHGL "Use the mathGL library" ON)
+option(GCTL_SEISMIC_MATHGL "Use the mathGL library" OFF)
 
 message(STATUS "Platform: " ${CMAKE_HOST_SYSTEM_NAME})
 message(STATUS "Install prefix: " ${CMAKE_INSTALL_PREFIX})
diff --git a/exam/check_sac.cpp b/exam/check_sac.cpp
index a9db68d..04e969e 100644
--- a/exam/check_sac.cpp
+++ b/exam/check_sac.cpp
@@ -23,7 +23,7 @@ int main(int argc, char *argv[])
 {
     gctl::SAC sac1("/Users/zhangyi/Desktop/GX_XC/MERGED.2016.121.15.59.58.7600.GX.BBX.00.SHZ.D.SAC");
     sac1.info();
-    sac1.plot("tmp.eps");
+    //sac1.plot("tmp.eps");
     //sac1.save("tmp.SAC_ASC");
 
 /*
diff --git a/exam/check_sig.cpp b/exam/check_sig.cpp
index 12deee9..3033282 100644
--- a/exam/check_sig.cpp
+++ b/exam/check_sig.cpp
@@ -77,8 +77,8 @@ int main(int argc, char *argv[])
     gctl::SIG_UNIT a, b, c;
     a.init(10001, 0.0, 0.01);
     b.init(10001, 0.0, 0.01);
-    gctl::random(a.val, 0.0, 0.02);
-    gctl::random(b.val, 0.0, 0.02);
+    a.val.random_float(0.0, 0.02);
+    b.val.random_float(0.0, 0.02);
 
     double f1 = 1.0/10.0;
 
@@ -90,12 +90,12 @@ int main(int argc, char *argv[])
         if (t >= 60 && t <= 70) b.val[i] += sin(2.0*M_PI*t*f1);
         
     }
-    a.plot();
-    b.plot();
+    //a.plot();
+    //b.plot();
 
     gctl::SIG_UNIT xc;
     xc.linear_cross_correlation(b, a);
-    xc.plot("tmp.eps");
+    //xc.plot("tmp.eps");
 /*
     gctl::array<gctl::SIG_UNIT> xcs(sigs.size() - 1);
     for (size_t i = 0; i < sigs.size() -1 ; i++)
diff --git a/lib/seismic/sac.cpp b/lib/seismic/sac.cpp
index 11736ba..195913f 100644
--- a/lib/seismic/sac.cpp
+++ b/lib/seismic/sac.cpp
@@ -45,13 +45,13 @@ void gctl::SAC_PLOT::link_source(SIG_UNIT *sig, SAC_HD *hd, std::string filename
 int gctl::SAC_PLOT::Draw(mglGraph *gr)
 {
     gctl::array<float> x;
-    gctl::sequence((float) 0.0, hd_ptr->delta, sig_ptr->val.size(), x);
+    x.sequence((float) 0.0, hd_ptr->delta, sig_ptr->val.size());
 
     mglData x_d, y_d;
     x_d.Set(x.get(), x.size());
     y_d.Set(sig_ptr->val.get(), sig_ptr->val.size());
 
-    float mean = gctl::mean(sig_ptr->val);
+    float mean = sig_ptr->val.mean();
     std::string s_nk = hd_ptr->knetwk; s_nk.erase(s_nk.find_last_not_of(" ") + 1);
     std::string s_st = hd_ptr->kstnm; s_st.erase(s_st.find_last_not_of(" ") + 1);
     std::string s_cp = hd_ptr->kcmpnm; s_cp.erase(s_cp.find_last_not_of(" ") + 1);
diff --git a/lib/seismic/signal.cpp b/lib/seismic/signal.cpp
index 143880a..1991739 100644
--- a/lib/seismic/signal.cpp
+++ b/lib/seismic/signal.cpp
@@ -45,13 +45,13 @@ void gctl::SIG_PLOT::link_source(SIG_UNIT *sig, std::string filename)
 int gctl::SIG_PLOT::Draw(mglGraph *gr)
 {
     gctl::array<double> x;
-    gctl::sequence(sig_ptr->rt0, sig_ptr->delta, sig_ptr->val.size(), x);
+    x.sequence(sig_ptr->rt0, sig_ptr->delta, sig_ptr->val.size());
 
     mglData x_d, y_d;
     x_d.Set(x.get(), x.size());
     y_d.Set(sig_ptr->val.get(), sig_ptr->val.size());
 
-    double mean = gctl::mean(sig_ptr->val);
+    double mean = sig_ptr->val.mean();
     double mini = sig_ptr->val[0], maxi = sig_ptr->val[0];
     for (size_t i = 1; i < sig_ptr->val.size(); i++)
     {
@@ -271,7 +271,7 @@ void gctl::SIG_UNIT::remove_mean(int win_size)
     double mean;
     if (win_size <= 1)
     {
-        mean = gctl::mean(val);
+        mean = val.mean();
         for (size_t i = 0; i < val.size(); i++)
         {
             val[i] -= mean;
@@ -309,8 +309,8 @@ void gctl::SIG_UNIT::remove_mean(int win_size)
 
 void gctl::SIG_UNIT::remove_outliers(double factor)
 {
-    double std = gctl::std(val);
-    double mean = gctl::mean(val);
+    double std = val.std();
+    double mean = val.mean();
 
     int vs = val.size();
     for (size_t i = 0; i < vs; i++)
diff --git a/lib/seismic/signal.h b/lib/seismic/signal.h
index dfa69da..a0f05f6 100644
--- a/lib/seismic/signal.h
+++ b/lib/seismic/signal.h
@@ -28,12 +28,6 @@
 #ifndef _GCTL_SEISMIC_SIGNAL_H
 #define _GCTL_SEISMIC_SIGNAL_H
 
-#include "gctl/core.h"
-#include "gctl/utility.h"
-#include "gctl/maths.h"
-#include "gctl/algorithm.h"
-#include "gctl/io.h"
-
 #include "gctl_seismic_config.h"
 #ifdef GCTL_SEISMIC_MATHGL
 
@@ -42,6 +36,12 @@
 
 #endif // GCTL_SEISMIC_MATHGL
 
+#include "gctl/core.h"
+#include "gctl/utility.h"
+#include "gctl/maths.h"
+#include "gctl/algorithms.h"
+#include "gctl/io.h"
+
 namespace gctl
 {
     enum SIG_CHANNEL
diff --git a/lib/seismic/xcorrelation.cpp b/lib/seismic/xcorrelation.cpp
index ebe4b03..368f1f9 100644
--- a/lib/seismic/xcorrelation.cpp
+++ b/lib/seismic/xcorrelation.cpp
@@ -338,16 +338,16 @@ void gctl::seismic::Xcorrelation::Xcorrelation_two_stations(std::string stn_sac_
     while ((!sac1.signal.cut_section(day_sig1, cut_t0, 24*3600)) && 
         (!sac2.signal.cut_section(day_sig2, cut_t0, 24*3600)))
     {
-        day_std1 = gctl::std(day_sig1.val);
-        day_std2 = gctl::std(day_sig2.val);
+        day_std1 = day_sig1.val.std();
+        day_std2 = day_sig2.val.std();
 
         cut_t00 = cut_t0;
         while((!day_sig1.cut_section(sig1, cut_t00, frag_sec)) && 
         (!day_sig2.cut_section(sig2, cut_t00, frag_sec))) // Both successed
         {
             // Skiped by threshold selection
-            sig_std1 = gctl::std(sig1.val);
-            sig_std2 = gctl::std(sig2.val);
+            sig_std1 = sig1.val.std();
+            sig_std2 = sig2.val.std();
             if (sig_std1 > sigma*day_std1 || sig_std2 > sigma*day_std2)
             {
                 cut_t00.add_duration(frag_sec*over_lap); continue;