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# Table of Contents

* [swmfpy](#.swmfpy)
* [swmfpy.web](#.swmfpy.web)
  * [get\_omni\_data](#.swmfpy.web.get_omni_data)
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  * [download\_magnetogram\_hmi](#.swmfpy.web.download_magnetogram_hmi)
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  * [download\_magnetogram\_adapt](#.swmfpy.web.download_magnetogram_adapt)
* [swmfpy.io](#.swmfpy.io)
  * [read\_wdc\_ae](#.swmfpy.io.read_wdc_ae)
  * [read\_wdc\_asy\_sym](#.swmfpy.io.read_wdc_asy_sym)
  * [read\_gm\_log](#.swmfpy.io.read_gm_log)
* [swmfpy.paramin](#.swmfpy.paramin)
  * [replace\_command](#.swmfpy.paramin.replace_command)
  * [read\_command](#.swmfpy.paramin.read_command)

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<a name=".swmfpy"></a>
## swmfpy
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A collection of tools to read, write, visualize with the
Space Weather Modeling Framework (SWMF).
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Modules
-------
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These are automatically imported.
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- `swmfpy.io` Input/Output tools.
- `swmfpy.paramin` PARAM.in editing tools.
- `swmfpy.web` Internet data downloading/uploading tools.
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Extra Modules
-------------
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These are not automatically imported. Might have extra dependancies.
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*None yet.*
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<a name=".swmfpy.web"></a>
## swmfpy.web

Tools to retrieve and send data on the web.

Here are a collection of tools to work with data on the internet. Thus,
this module mostly requires an internet connection.

<a name=".swmfpy.web.get_omni_data"></a>
#### get\_omni\_data

```python
get_omni_data(time_from, time_to, **kwargs)
```

Retrieve omni solar wind data over http.

This will download omni data from https://spdf.gsfc.nasa.gov/pub/data/omni
and put it into a dictionary. If your data is large, then make a csv and
use swmfpy.io.read_omni_data().

**Arguments**:

- `time_from` _datetime.datetime_ - The start time of the solar wind
  data that you want to receive.
- `time_to` _datetime.datetime_ - The end time of the solar wind data
  you want to receive.
  

**Returns**:

- `dict` - This will be a list of *all* columns
  available in the omni data set.
  

**Examples**:

  ```python
  import datetime
  import swmfpy.web
  
  storm_start = datetime.datetime(year=2000, month=1, day=1)
  storm_end = datetime.datetime(year=2000, month=2, day=15)
  data = swmfpy.web.get_omni_data(time_from=storm_start,
  time_to=storm_end)
  ```

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<a name=".swmfpy.web.download_magnetogram_hmi"></a>
#### download\_magnetogram\_hmi

```python
download_magnetogram_hmi(mag_time, **kwargs)
```

Downloads HMI vector magnetogram fits files.

This will download vector magnetogram FITS files from
Joint Science Operations Center (JSOC) near a certain hour.

This unfortunately depends on sunpy/drms, if you don't have it try,


```bash
pip install -U --user drms
```

**Arguments**:

- `mag_time` _datetime.datetime_ - Time after which to find
  vector magnetograms.
  
  **kwargs:
- `download_dir` _str_ - Relative directory to download to.
- `verbose` _bool_ - (default False) print out the files it's downloading.
  

**Returns**:

  (str) list of filenames downloaded.
  

**Raises**:

- `ImportError` - If module `drms` is not found.
- `FileNotFoundError` - If the JSOC doesn't have the magnetograms for that
  time.
  

**Examples**:

  ```python
  from swmfpy.web import download_magnetogram_hmi
  import datetime as dt
  
  # I am interested in the hmi vector magnetogram from 2014, 2, 18
  time_mag = dt.datetime(2014, 2, 18, 10)  # Around hour 10
  
  # Calling it will download
  filenames = download_magnetogram_hmi(mag_time=time_mag,
  download_dir='mydir/')
  
  # To see my list
  print('The magnetograms I downloaded are:', filenames)
  
  # You may call and ignore the file list
  download_magnetogram_hmi(mag_time=time_mag, download_dir='mydir')
  ```

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<a name=".swmfpy.web.download_magnetogram_adapt"></a>
#### download\_magnetogram\_adapt

```python
download_magnetogram_adapt(time, map_type='fixed', **kwargs)
```

This routine downloads GONG ADAPT magnetograms.

Downloads ADAPT magnetograms from ftp://gong2.nso.edu/adapt/maps/gong/
to a local directory. It will download all maps with the regex file
pattern: adapt4[0,1]3*yyyymmddhh

**Arguments**:

- `time` _datetime.datetime_ - Time in which you want the magnetogram.
- `map_type` _str_ - (default: 'fixed')
  Choose either 'fixed' or 'central' for
  the map type you want.
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  **kwargs:
- `download_dir` _str_ - (default is current dir) Relative directory
  where you want the maps to be downloaded.
  

**Returns**:

- `str` - First unzipped filename found.
  

**Raises**:

- `NotADirectoryError` - If the adapt maps directory
  is not found on the server.
- `ValueError` - If map_type is not recognized.
  (i.e. not 'fixed' or 'central')
- `FileNotFoundError` - If maps were not found.
  

**Examples**:

  ```python
  import datetime as dt
  
  # Use datetime objects for the time
  time_flare = dt.datetime(2018, 2, 12, hour=10)
  swmfpy.web.download_magnetogram_adapt(time=time_flare,
  map_type='central',
  download_dir='./mymaps/')
  ```

<a name=".swmfpy.io"></a>
## swmfpy.io
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Input/Output tools
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Here are tools to read and write files relating to SWMF.
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TODO: Move pandas dependancy elsewhere.
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<a name=".swmfpy.io.read_wdc_ae"></a>
#### read\_wdc\_ae
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```python
read_wdc_ae(wdc_filename)
```
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Read an auroral electrojet (AE) indeces from Kyoto's World Data Center
text file into a dictionary of lists.

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**Arguments**:

  
- `wdc_filename` _str_ - Filename of wdc data from
  http://wdc.kugi.kyoto-u.ac.jp/
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**Returns**:

  
- `dict` - {
  Auroral indeces 'AL', 'AE', 'AO', 'AU' (int): {
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  'times' (datetime.datetime)
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- `'values'` _int_ - List of indeces.
  }

<a name=".swmfpy.io.read_wdc_asy_sym"></a>
#### read\_wdc\_asy\_sym
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```python
read_wdc_asy_sym(wdc_filename)
```
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Reads a WDC file for ASY/SYM data.
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Reads an ASY/SYM file downloaded from
http://wdc.kugi.kyoto-u.ac.jp/aeasy/index.html
and puts it into a dictionary.
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**Arguments**:
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- `wdc_filename` _str_ - Relative filename (or file handle no.) to read.
  
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**Returns**:
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- `dict` - of values.
- `{'[ASY-SYM]-[D-H]'` - 'times': [], 'values': []}
  
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**Examples**:
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  ```python
  indeces = swmfpy.io.read_wdc_asy_sym('wdc.dat')
  # Plot data
  plt.plot(indeces['SYM-H']['times'],
  indeces['SYM-H']['values'],
  label='SYM-H [nT]'
  )
  plt.xlabel('Time [UT]')
  ```
  
  Important to note if there is bad data it will be filled as None.
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<a name=".swmfpy.io.read_gm_log"></a>
#### read\_gm\_log
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```python
read_gm_log(filename, colnames=None, dtypes=None, index_time=True)
```
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Make a dictionary out of the indeces outputted
from the GM model log.
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**Arguments**:
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- `filename` _str_ - The relative filename as a string. (or file handle no.)
- `colnames` _[str]_ - (default: None) Supply the name of the columns.
  If None it will use second line
  of log file.
- `dtypes` _[types]_ - (default: None) Provide types for the columns, if
  None then all will be float.
- `index_time` _bool_ - (default: True) Make a column of dt.datetime objects
  in dictionary key 'Time [UT]'.
  
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**Returns**:
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  Dictionary of the log file
  
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**Examples**:
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  To plot AL and Dst get the log files
  ```python
  geo = swmfpy.io.read_gm_log('run/GM/IO2/geoindex_e20140215-100500.log')
  dst = swmfpy.io.read_gm_log('run/GM/IO2/log_e20140215-100500.log')
  
  # Plot AL indeces
  plt.plot(geo['times', geo['AL'])
  ```
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<a name=".swmfpy.paramin"></a>
## swmfpy.paramin
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These tools are to help script the editing of PARAM.in files.
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<a name=".swmfpy.paramin.replace_command"></a>
#### replace\_command
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```python
replace_command(parameters, input_file, output_file='PARAM.in')
```
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Replace values for the parameters in a PARAM.in file.

Note, if you have repeat commands this will replace all the repeats.

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**Arguments**:
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- `parameters` _dict_ - Dictionary of strs with format
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  replace = {'COMMAND': ['value', 'comments', ...]}
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  This is case sensitive.
- `input_file` _str_ - String of PARAM.in file name.
- `output_file` _str_ - (default 'PARAM.in') The output file to write to.
  A value of None will not output a file.
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**Returns**:
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  A list of lines of the PARAM.in file that would be outputted.
  
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**Raises**:
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- `TypeError` - If a value given couldn't be converted to string.
  
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**Examples**:
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  ```python
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  change['SOLARWINDFILE'] = [['T', 'UseSolarWindFile'],
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  ['new_imf.dat', 'NameSolarWindFile']]
  # This will overwrite PARAM.in
  swmfpy.paramin.replace('PARAM.in.template', change)
  ```
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<a name=".swmfpy.paramin.read_command"></a>
#### read\_command
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```python
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read_command(command, paramin_file='PARAM.in', **kwargs)
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```

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Get parameters of a certain command in PARAM.in file.
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This will find the COMMAND and return a list of
values for the parameters.
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**Arguments**:
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- `command` _str_ - This is the COMMAND you're looking for.
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- `paramin_file` _str_ - (default: 'PARAM.in') The file in which you're
  looking for the command values.
  **kwargs:
- `num_of_values` _int_ - (default: None) Number of values to take from
  command.
  
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**Returns**:
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- `list` - Values found for the COMMAND in file. Index 0 is
  COMMAND and the values follow (1 for first argument...)
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**Raises**:
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- `ValueError` - When the COMMAND is not found.
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**Examples**:
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  ```python
  start_time = swmfpy.paramin.read_command('`STARTTIME`')
  end_time = swmfpy.paramin.read_command('`ENDTIME`')
  print('Starting month is ', start_time[1])
  print('Ending month is ', end_time[1])
  ```
  
  This will treat all following lines as values for the command. To suppress
  this, try using the `num_of_values` keyword. This is helpful if your
  PARAM.in is comment heavy.
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