{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Plotting wind: barbs, wind speed"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2025-01-13T11:31:05.262585Z",
     "iopub.status.busy": "2025-01-13T11:31:05.262096Z",
     "iopub.status.idle": "2025-01-13T11:31:05.800507Z",
     "shell.execute_reply": "2025-01-13T11:31:05.800005Z"
    }
   },
   "outputs": [],
   "source": [
    "%matplotlib inline\n",
    "# for figures in notebook\n",
    "\n",
    "# import & initialize epygram\n",
    "import epygram\n",
    "epygram.init_env()\n",
    "\n",
    "import os\n",
    "INPUTS_DIR = os.path.join('..', 'inputs')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2025-01-13T11:31:05.802641Z",
     "iopub.status.busy": "2025-01-13T11:31:05.802394Z",
     "iopub.status.idle": "2025-01-13T11:31:05.948916Z",
     "shell.execute_reply": "2025-01-13T11:31:05.948217Z"
    }
   },
   "outputs": [],
   "source": [
    "r = epygram.open(os.path.join(INPUTS_DIR, 'ICMSHAROM+0022'), 'r')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2025-01-13T11:31:05.951255Z",
     "iopub.status.busy": "2025-01-13T11:31:05.951049Z",
     "iopub.status.idle": "2025-01-13T11:31:06.010103Z",
     "shell.execute_reply": "2025-01-13T11:31:06.009674Z"
    }
   },
   "outputs": [],
   "source": [
    "u = r.readfield('CLSVENT.ZONAL')\n",
    "v = r.readfield('CLSVENT.MERIDIEN')\n",
    "uv = epygram.fields.make_vector_field(u,v)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2025-01-13T11:31:06.011861Z",
     "iopub.status.busy": "2025-01-13T11:31:06.011668Z",
     "iopub.status.idle": "2025-01-13T11:31:06.610992Z",
     "shell.execute_reply": "2025-01-13T11:31:06.610486Z"
    }
   },
   "outputs": [],
   "source": [
    "fig, ax = uv.cartoplot(subsampling=10, vector_plot_method='barbs', subzone='CI',\n",
    "                       # ! user got to know the very nature of the field he is plotting:\n",
    "                       components_are_projected_on='lonlat',\n",
    "                       map_factor_correction=False)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2025-01-13T11:31:06.614397Z",
     "iopub.status.busy": "2025-01-13T11:31:06.614242Z",
     "iopub.status.idle": "2025-01-13T11:31:06.856559Z",
     "shell.execute_reply": "2025-01-13T11:31:06.856099Z"
    }
   },
   "outputs": [],
   "source": [
    "# or if you don't want wind speed:\n",
    "fig, ax = uv.cartoplot(subsampling=10, vector_plot_method='barbs', subzone='CI',\n",
    "                       # ! user got to know the very nature of the field he is plotting:\n",
    "                       components_are_projected_on='lonlat',\n",
    "                       plot_method=None)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "execution": {
     "iopub.execute_input": "2025-01-13T11:31:06.858783Z",
     "iopub.status.busy": "2025-01-13T11:31:06.858588Z",
     "iopub.status.idle": "2025-01-13T11:31:07.174218Z",
     "shell.execute_reply": "2025-01-13T11:31:07.173697Z"
    }
   },
   "outputs": [],
   "source": [
    "# or if you want to plot module only:\n",
    "ff = uv.to_module()\n",
    "fig, ax = ff.cartoplot(subzone='CI')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
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