├── .gitignore ├── LICENSE ├── README.md ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ ├── androidTest │ └── java │ │ └── com │ │ └── c_bata │ │ └── javadataframe │ │ └── ApplicationTest.java │ ├── main │ ├── AndroidManifest.xml │ ├── java │ │ └── com │ │ │ └── c_bata │ │ │ └── javadataframe │ │ │ └── MainActivity.java │ └── res │ │ ├── layout │ │ ├── activity_main.xml │ │ └── content_main.xml │ │ ├── menu │ │ └── menu_main.xml │ │ ├── mipmap-hdpi │ │ └── ic_launcher.png │ │ ├── mipmap-mdpi │ │ └── ic_launcher.png │ │ ├── mipmap-xhdpi │ │ └── ic_launcher.png │ │ ├── mipmap-xxhdpi │ │ └── ic_launcher.png │ │ ├── mipmap-xxxhdpi │ │ └── ic_launcher.png │ │ ├── values-v21 │ │ └── styles.xml │ │ ├── values-w820dp │ │ └── dimens.xml │ │ └── values │ │ ├── colors.xml │ │ ├── dimens.xml │ │ ├── strings.xml │ │ └── styles.xml │ └── test │ └── java │ └── com │ └── c_bata │ └── javadataframe │ └── ExampleUnitTest.java ├── build.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── jpandas ├── .gitignore ├── build.gradle └── src │ ├── main │ └── java │ │ └── com │ │ └── c_bata │ │ ├── DataFrame.java │ │ └── Series.java │ └── test │ └── java │ └── com │ └── c_bata │ └── jpandas │ ├── DataFrameTest.java │ └── SeriesTest.java └── settings.gradle /.gitignore: -------------------------------------------------------------------------------- 1 | # OS X files 2 | Thumbs.db 3 | 4 | # gradle files 5 | .gradle 6 | 7 | # Intellij project files 8 | .idea 9 | *.iml 10 | 11 | # generated files 12 | bin/ 13 | gen/ 14 | obj/ 15 | apk/ 16 | target/ 17 | build/ 18 | 19 | # Local configuration file (sdk path, etc) 20 | local.properties 21 | 22 | # Proguard folder generated by Eclipse 23 | proguard/ 24 | 25 | com_crashlytics_export_strings.xml 26 | crashlytics-build.properties -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright 2015 Masashi Shibata 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # JPandas 2 | 3 | JPandas is an implementation of [Pandas (Python Data Analysis Library)](http://pandas.pydata.org/) on java. 4 | 5 | In data science fields, We often use Python or R. 6 | Because these language offers some useful function for analyzing data. 7 | DataFrame is one of the powerful data structure for that. 8 | 9 | If we implement result of analysis to real application (for example android app), JPandas helps it. 10 | 11 | 12 | ## Tutorial 13 | 14 | #### Define DataFrame 15 | 16 | ``` 17 | DataFrame df = new DataFrame(); 18 | 19 | df.put("feature_a", new Series(3.0, 8.0, 2.0, ...)); 20 | df.put("feature_b", new Series(4, 6, 10, -2, ...)); 21 | : 22 | : 23 | ``` 24 | 25 | #### methods 26 | 27 | This library offers useful methods like pandas. 28 | 29 | - mean 30 | 31 | ``` 32 | df.mean() 33 | // Output 34 | // a b c d e 35 | // mean 0.321200 -0.331797 -0.030067 0.298881 -0.002687 36 | ``` 37 | 38 | ``` 39 | df.mean().get('a') 40 | // Output 41 | // a 42 | // mean 0.321200 43 | ``` 44 | 45 | - std 46 | 47 | ``` 48 | df.std() 49 | // Output 50 | // a b c d e 51 | // std 0.321200 -0.331797 -0.030067 0.298881 -0.002687 52 | ``` 53 | 54 | ``` 55 | df.std().get('a') 56 | // Output 57 | // a 58 | // std 0.321200 59 | ``` 60 | 61 | - describe 62 | 63 | ``` 64 | df.describe() 65 | 66 | // Output 67 | // a b c d e 68 | // count 10.000000 10.000000 10.000000 10.000000 10.000000 69 | // mean 0.321200 -0.331797 -0.030067 0.298881 -0.002687 70 | // std 0.982764 0.782483 1.318384 0.774907 1.324976 71 | // min -1.571542 -1.374674 -1.682764 -0.573934 -2.005993 72 | // 25% 0.144444 -0.842716 -0.969695 -0.274428 -1.205816 73 | // 50% 0.399115 -0.626424 -0.130309 0.296615 0.237664 74 | // 75% 0.714873 0.307824 0.365205 0.346391 0.938685 75 | // max 1.742534 1.048565 2.725946 1.858966 1.657750 76 | ``` 77 | 78 | ``` 79 | df.describe().get('a') 80 | 81 | // Output 82 | // a 83 | // count 10.000000 84 | // mean 0.321200 85 | // std 0.982764 86 | // min -1.571542 87 | // 25% 0.144444 88 | // 50% 0.399115 89 | // 75% 0.714873 90 | // max 1.742534 91 | ``` 92 | 93 | ## LICENSE 94 | 95 | ``` 96 | Copyright 2015 Masashi Shibata 97 | 98 | Licensed under the Apache License, Version 2.0 (the "License"); 99 | you may not use this file except in compliance with the License. 100 | You may obtain a copy of the License at 101 | 102 | http://www.apache.org/licenses/LICENSE-2.0 103 | 104 | Unless required by applicable law or agreed to in writing, software 105 | distributed under the License is distributed on an "AS IS" BASIS, 106 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 107 | See the License for the specific language governing permissions and 108 | limitations under the License. 109 | ``` 110 | -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion 23 5 | buildToolsVersion "23.0.2" 6 | 7 | defaultConfig { 8 | applicationId "com.c_bata.javadataframe" 9 | minSdkVersion 21 10 | targetSdkVersion 23 11 | versionCode 1 12 | versionName "1.0" 13 | } 14 | buildTypes { 15 | release { 16 | minifyEnabled false 17 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 18 | } 19 | } 20 | } 21 | 22 | dependencies { 23 | compile fileTree(dir: 'libs', include: ['*.jar']) 24 | compile project(':jpandas') 25 | testCompile 'junit:junit:4.12' 26 | compile 'com.android.support:appcompat-v7:23.1.0' 27 | compile 'com.android.support:design:23.1.0' 28 | } 29 | -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # By default, the flags in this file are appended to flags specified 3 | # in /Users/c-bata/Library/Android/sdk/tools/proguard/proguard-android.txt 4 | # You can edit the include path and order by changing the proguardFiles 5 | # directive in build.gradle. 6 | # 7 | # For more details, see 8 | # http://developer.android.com/guide/developing/tools/proguard.html 9 | 10 | # Add any project specific keep options here: 11 | 12 | # If your project uses WebView with JS, uncomment the following 13 | # and specify the fully qualified class name to the JavaScript interface 14 | # class: 15 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 16 | # public *; 17 | #} 18 | -------------------------------------------------------------------------------- /app/src/androidTest/java/com/c_bata/javadataframe/ApplicationTest.java: -------------------------------------------------------------------------------- 1 | package com.c_bata.javadataframe; 2 | 3 | import android.app.Application; 4 | import android.test.ApplicationTestCase; 5 | 6 | /** 7 | * Testing Fundamentals 8 | */ 9 | public class ApplicationTest extends ApplicationTestCase { 10 | public ApplicationTest() { 11 | super(Application.class); 12 | } 13 | } -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 11 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | -------------------------------------------------------------------------------- /app/src/main/java/com/c_bata/javadataframe/MainActivity.java: -------------------------------------------------------------------------------- 1 | package com.c_bata.javadataframe; 2 | 3 | import android.os.Bundle; 4 | import android.support.design.widget.FloatingActionButton; 5 | import android.support.design.widget.Snackbar; 6 | import android.support.v7.app.AppCompatActivity; 7 | import android.support.v7.widget.Toolbar; 8 | import android.util.Log; 9 | import android.view.View; 10 | import android.view.Menu; 11 | import android.view.MenuItem; 12 | 13 | import com.c_bata.DataFrame; 14 | import com.c_bata.Series; 15 | 16 | import java.util.Iterator; 17 | 18 | public class MainActivity extends AppCompatActivity { 19 | 20 | @Override 21 | protected void onCreate(Bundle savedInstanceState) { 22 | super.onCreate(savedInstanceState); 23 | setContentView(R.layout.activity_main); 24 | Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); 25 | setSupportActionBar(toolbar); 26 | 27 | FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab); 28 | fab.setOnClickListener(new View.OnClickListener() { 29 | @Override 30 | public void onClick(View view) { 31 | Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG) 32 | .setAction("Action", null).show(); 33 | } 34 | }); 35 | 36 | // Checking jpandas 37 | Series series_a = new Series(); 38 | series_a.add(3.0); 39 | series_a.add(5.0); 40 | Series series_b = new Series(); 41 | series_b.add(9.0); 42 | series_b.add(20.0); 43 | 44 | DataFrame df = new DataFrame(); 45 | df.put("feature_a", series_a); 46 | df.put("feature_b", series_b); 47 | 48 | // Log.d(df.mean()); 49 | Log.d("JPANDAS", String.valueOf(df.mean().get("feature_a"))); 50 | Log.d("JPANDAS", String.valueOf(df.mean().get("feature_b"))); 51 | // Log.d(df.std()); 52 | Log.d("JPANDAS", String.valueOf(df.std().get("feature_a"))); 53 | Log.d("JPANDAS", String.valueOf(df.std().get("feature_b"))); 54 | } 55 | 56 | @Override 57 | public boolean onCreateOptionsMenu(Menu menu) { 58 | // Inflate the menu; this adds items to the action bar if it is present. 59 | getMenuInflater().inflate(R.menu.menu_main, menu); 60 | return true; 61 | } 62 | 63 | @Override 64 | public boolean onOptionsItemSelected(MenuItem item) { 65 | // Handle action bar item clicks here. The action bar will 66 | // automatically handle clicks on the Home/Up button, so long 67 | // as you specify a parent activity in AndroidManifest.xml. 68 | int id = item.getItemId(); 69 | 70 | //noinspection SimplifiableIfStatement 71 | if (id == R.id.action_settings) { 72 | return true; 73 | } 74 | 75 | return super.onOptionsItemSelected(item); 76 | } 77 | } 78 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 8 | 9 | 11 | 12 | 15 | 16 | 17 | 18 | 19 | 20 | 24 | 25 | 26 | -------------------------------------------------------------------------------- /app/src/main/res/layout/content_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 11 | 12 | 14 | 15 | -------------------------------------------------------------------------------- /app/src/main/res/menu/menu_main.xml: -------------------------------------------------------------------------------- 1 | 4 | 6 | 7 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/c-bata/jpandas/bdeaa54623464c4e8fdba4717374d4bb35f65eae/app/src/main/res/mipmap-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-mdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/c-bata/jpandas/bdeaa54623464c4e8fdba4717374d4bb35f65eae/app/src/main/res/mipmap-mdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/c-bata/jpandas/bdeaa54623464c4e8fdba4717374d4bb35f65eae/app/src/main/res/mipmap-xhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/c-bata/jpandas/bdeaa54623464c4e8fdba4717374d4bb35f65eae/app/src/main/res/mipmap-xxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/c-bata/jpandas/bdeaa54623464c4e8fdba4717374d4bb35f65eae/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/values-v21/styles.xml: -------------------------------------------------------------------------------- 1 | > 2 | 8 | 9 | -------------------------------------------------------------------------------- /app/src/main/res/values-w820dp/dimens.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 64dp 6 | 7 | -------------------------------------------------------------------------------- /app/src/main/res/values/colors.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | #3F51B5 4 | #303F9F 5 | #FF4081 6 | 7 | -------------------------------------------------------------------------------- /app/src/main/res/values/dimens.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 16dp 4 | 16dp 5 | 16dp 6 | 7 | -------------------------------------------------------------------------------- /app/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | JavaDataFrame 3 | Settings 4 | 5 | -------------------------------------------------------------------------------- /app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 10 | 14 |