julia-demo.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Try GMT.jl online"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "This Jupyter lab environment has the latest GMT.jl installed. You can try GMT.jl with no extra install required."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "**NOTE:** Any changes will be lost when the Jupyter lab is closed. Select \"File\"->\"Download\" to save notebooks to your computer."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "To execute the code cells, select it and type `Shift + Enter` or click on the \"Run\" ► button in the menu bar. \n",
    "\n",
    "For tutorials and more examples, visit the official website: https://www.generic-mapping-tools.org/GMT.jl"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Loading the GMT.jl package"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# Load the GMT.jl package. This only needs to be run once\n",
    "using GMT"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Example 1"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Here we plot the global coastlines using the Hammer projection. The `show=true` is needed to show the image in the notebook."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "coast(region=:g, proj=:Hammer, frame=:g, land=:black, ocean=:cornsilk, show=true)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Example 2"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "An image is usually made up with multiple layers of data. Here we are going to plot hotspot locations on a global map with earth relief and coastlines. \n",
    "\n",
    "- The first command use the `basemap` function to define the projection, region and plot the basemap. \n",
    "- The remaining commands use the `!` variation of the functions, which means that we are appending to a previous plot. \n",
    "- The last command uses the `show=true` because we are done with this figure. "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "basemap(region=:g, proj=(name=:Ortho, center=(220,30)), figsize=8, frame=:g)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "grdimage!(\"@earth_relief_20m\", cmap=:geo, shade=true)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "coast!(res=:crude, shore=true, area=1000)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "plot!(\"@hotspots.txt\", marker=:circle, size=\"0.2c\", markerfacecolor=:red, show=true)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Experiment for yourself"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Try running different things in the cells below or edit and rerun the cells above."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
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   "language": "julia",
   "name": "julia-1.3"
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  "language_info": {
   "file_extension": ".jl",
   "mimetype": "application/julia",
   "name": "julia",
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}