PENGERTIAN MATLAB DAN MEMULAI MATLAB

Pengertian Matlab

Matlab singkatan  dari  Matrix  Laboratory. Sesuai dengan namanya, struktur data yang terdapat dalam Matlab menggunakan matriks atau array berdimensi dua (double). Oleh karenanya penguasaan teori matriks mutlak diperlukan bagi pengguna pemula Matlab agar mudah dalam mempelajari dan memahami operasi‐operasi yang ada di Matlab. Matlab adalah bahasa pemrograman dengan kemampuan tinggi dalam bidang komputasi yang mengintegrasikan komputansi, visualisasi dan pemrograman dalam lingkungan yang sederhana dimana permasalahan dan solusi dinyatakan dalam matematika biasa. Matlab merupakan bahasa pemrograman computer berbasis windows dengan orientasi dasarnya adalah matrik, namun pada program ini tidak menutup kemungkinan untuk pengerjaan permasalahan non matrik. Selain itu matlab juga merupakan bahasa pemrograman yang berbasis pada obyek (OOP), namun disisi lain karena matlab bukanlah type compiler, makla program yang dihasilkan pada matlab tidak dapat berdiri sendiri, agar hasil program dapat berdiri sendiri maka harus dilakukan transfer pada bahasa pemrograman yang lain, misalnya C++. Pada matlab terdapat tiga windows yang digunakan dalam operasinya yaitu command windows (layar perintah) dan figure windows (layar gambar), serta Note Pad (sebagai editor program) (Arhami,2004).

Matlab (Matrix Laboratory) adalah sebuah pemrograman untuk analisis dan komputasi numerik dan merupakan suatu bahasa pemrograman matematika lanjutan yang dibentuk dengan dasar pemikiran menggunakan sifat dan bentuk matrik. Pada awalnya, program ini merupakan interface untuk koleksi rutin-rutin numerik dari proyek LINSPACK dan EISPACK, dan dikembangkan menggunakan bahasa FORTRAN. Namun sekarang merupakan produk komersial dari perusahaan Mathworks, Inc.yang dalam perkembangan selanjutnya dikembangkan menggunakan bahasa C++ dan assembler (utamanya untuk fungsi-fungsi dasar matlab). Dengan demikian jika dalam perhitungan kita dapat menformulasikan masalah ke dalam format matriks maka matlab merupakan sofware terbaik untuk penyelesaian numerik.

Matlab banyak digunakan pada:

  1. Matematika dan Komputasi
  2. Pengembangan dan Algoritma
  3. Pemrograman modelling, simulasi, dan pembuatan prototype
  4. Analisa data, eksplorasi dan visualisasi
  5. Analisis numerik dan statistik
  6. Pengembangan aplikasi teknik

Matlab juga menyediakan beberapa fungsi yang dapat digunakan untuk menghasilkan bentuk-bentuk matriks yang diinginkan. Fungsi-fungsi tersebut antara lain:

  1. Zeros :untuk membuat matriks yang semua datanya bernilai nol
  2. Ones :untuk membuat matriks yang semua datanya bernilai satu
  3. Rand :untuk membuat matriks dengan data random dengan menggunakan distribusi uniform
  4. Eye :untuk membuat matriks identitas
  5. Randn :untuk membuat matriks dengan data random dengan menggunakan distribusi normal.

Beberapa penggunaan operator aritmatika daam bentuk matlab adalah:

  1. Perkalian : A*B
  2. Pembagian : A/B
  3. Pengurangan : A-B
  4. Penjumlahan : A+B
  5. Eksponensial : A^B

Banyak kemudahan dalam matlab, namun efektifitas pemrograman hanya akan tercapai jika mampu menerapkan metode-merode manipulasi data dalam skrip program(Away, 2006).

Memulai Matlab

Matlab  adalah paket pemrograman matematika berbasis matrik. Pada program matlab ada dua cara pelayanan program. Untuk program yang sederhana kita dapat langsung mengetikkan program pada Command window di Matlab prompt, hal tersebut akan lebih cepat dan efisien. Tetapi jika kita akan menambah perintah, merubah nilai satu atau lebih variable, memperbaiki program akan sangat membosankan. Hal tersebut dapat diatasi, dengan mengerjakan program pada script files atau M-files, sehingga kita dapat menyimpan dan memanggil kembali program yang telah dibuat untuk dilakukan perbaikan. Nama file ini diakhiri dengan ekstensi ‘.m’ contohnya, belajar.m.

Contoh perintah-perintah :

Menghapus semua variable yang sedang aktif.

>> clear

Membersihkan Command window

>> clc

Menampilkan variable yang aktif dalam memori computer

>> who

>> whos % untuk informasi yang lebih detail.

Semua dalam komputasi betul – betul dipertimbangkan, yaitu pada jumlah 1 yang biasa disebut scalar. Operasinya meliputi scalar yaitu matematika dasar. Pada suatu waktu, kita harus melakukan operasi ini lebih dari satu, melakukan operasi scalar berulang-ulang membutuhkan banyak waktu dan tidak praktis. Untuk mengatasi masalah ini maka digunakan program MATLAB, operasi ini disebut data array(Gultom,2013).

Demikianlah pembahasan tentang Pengertian Matlab dan Memulai Matlab… semoga bermanfaat, 🙂

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