Metadata-Version: 2.1
Name: wasdi
Version: 0.1.6
Summary: The Wasdi Python library
Home-page: http://www.wasdi.net
Author: FadeOut Software
Author-email: info@fadeout.biz
License: UNKNOWN
Description: # WASDI Python Library
        
        This is a **preliminary version** of the Python Library you can use to access the [WASDI](http://www.wasdi.net) platform functionalities from your Python code.
        
        Visit us at http://www.wasdi.net
        
        ----
        
        
        ## Python tutorial
        
        WASPY is the **WAS**DI **Py**thon Library. To start working with it, just install the library using:
        
        
        ```bash
        pip install wasdi
        ```
        
        
        To quickly check if the installation worked correctly, try running the following code:
        
        
        ```python
        import wasdi
        print(wasdi.hello())
        ```
        
        
        You should see this kind of output:
        
        
        ```json
        {"boolValue":null,"doubleValue":null,"intValue":null,"stringValue":"Hello Wasdi!!"}
        ```
        
        
        
        ### Edit the `config.json` file
        
        The `config.json` file is a standard json file, the syntax is:
        
        “VARIABLE_NAME”: value
        
        The minimal configuration to begin working with WASPY is:
        
        
        ```json
        {
          "USER": "yourUser@wasdi.net",
          "PASSWORD": "yourPasswordHere",
          "WORKSPACE": "nameOfTheWorkspaceYouWantToUse",
          "PARAMETERSFILEPATH": <path to a json file w/ your own parameters>
        }
        ```
        
        
        For the other available parameters please refer to the Documentation.
        
        
        ### Start WASPY
        
        To start WASPY and check if everything is working, run the following code:
        
        
        ```python
        wasdi.init('./config.json')
        ```
        
        
        The Lib will read the configuration file, load the user and password, log the user in, and then open the workspace specified in the configuration file. To check if everything is working, try to get the list of workspaces available for the user:
        
        
        ```python
        getWorkspaces()
        ```
        
        
        you should see a result like this:
        
        
        ```json
        [{u'ownerUserId': u'yourUser@wasdi.net',
          u'sharedUsers': [],
          u'workspaceId': u'23ab54f3-b453-2b3e-284a-b6a4243f0f2c',
          u'workspaceName': u'aNiceNameForThisWorkspace'},
         {u'ownerUserId': u'yourUser@wasdi.net',
          u'sharedUsers': [],
          u'workspaceId': u'103fbf01-2e68-22d3-bd45-2cf95665dac2',
          u'workspaceName': u'theNameOfAnotherWorkspace'}]
        ```
        
        The configured Workspace is already opened.  The use can open another workspace using:
        
        ```python
        openWorkspace('aNiceNameForThisWorkspace')
        ```
        
        and the lib replies showing the workspace unique id:
        
        ```python
        u'9ce787d4-1d59-4146-8df7-3fc9516d4eb3'
        ```
        
        To get the list of the products available in the workspace, call
        
        ```python
        getProductsByWorkspace('aNiceNameForThisWorkspace')
        ```
        
        and the lib returns a list of the products in the given workspace:
        
        ```json
        [u'S1A_IW_GRDH_1SDV_20190517T053543_20190517T053608_027263_0312F1_F071.zip',
        u'S1B_IW_RAW__0SDV_20190506T052631_20190506T052703_016119_01E53A_D2AD.zip', u'S1A_IW_GRDH_1SDV_20190517T053608_20190517T053633_027263_0312F1_3382.zip']
        ```
        
        ### Include WASDI in a custom Processor
        
        Let’s assume that the developer has his own EO Product Manipulation Code. At some point, the developer wishes to read his own input file, then make elaborations and finally save an output file. 
        
        Let’s imagine a pseudo-code like this.
        
        ```python
        # Input and output file name
        filename = '~wasdiUser/EO/myfile.zip'
        outputfilename = "~wasdiUser/EO/myoutput.tiff"
        
        # Read the file
        EOimage = multibandRead(filename, size, precision, offset, interleave, byteorder)
        # Elaborate the image somehow
        EOimage *= 2
        
        # Save the output
        imwrite(EOimage, outputfilename)
        ```
        
        To port the code onto WASDI, the pseudo-code has to be integrated like this:
        
        ```python
        import os
        
        filename = 'myfile.zip'
        outputFileName = 'myoutput.tiff'
        
        fullInputPath = getFullProductPath(filename)
        
        # Read the file
        EOproduct = multibandRead(fullInputPath, size, precision, offset, interleave, byteorder)
        # Elaborate the image
        EOproduct *= 2
        
        # Save the output
        # Get The Path
        outputPath = getSavePath()
        fullOutputPath = os.path.join(outputPath, outputFileName)
        # Use the save path
        imwrite(EOproduct, fullOutputPath)
        # Ingest in WASDI
        AddFileToWASDI(outputFileName)
        ```
        
        We modified the code to start the library and then to receive from WASDI the paths to use. 
        
        The input files are supposed to be in the workspace. In order for this to happen, the user can go the wasdi web application, open the workspace, search the needed image and add it to the workspace.
        
        The `getFullProductPath` method has a double goal:
        
        1. as the name suggests, it returns the local path to use back to the developer
        2. if the code is running on the client PC, the Wasdi Lib will checks if the file is available locally: in case this checks fails, the lib will automatically download the file from the WASDI cloud to the local PC. \
        To disable the auto download feature, is possible to add this parameter to the `config.json` file: \
        `"DOWNLOADACTIVE":0`
        
        To save a file the name is left to the user,  WASPY just provides the folder to use (`GetSavePath`). So to save the file we need to get the path and then concatenate the custom file name.
        
        The last call, `AddFileToWASDI`, has the goal to add the product to the workspace. It takes in input only the file name, without the full path.
        
        When used on the local PC, it will automatically upload the file after writing it on local file system. To inhibit this behavior, just add the following to the `config.json`:\
        ```json
        "UPLOADACTIVE":0
        ```
        
        ### Use Custom parameters
        
        Every processor usually has its own parameters. A typical example can be the name of a file in input, a threshold, the coordinates of an area of interest and so on. To let the developer work with her/his own parameters, WASPY implements an automatic file read. 
        
        Add this line to the configuration file `config.json`:
        
        ```json
        "PARAMETERSFILEPATH": <path to a similar file for own parameters>
        ```
        
        e.g.
        
        ```json
        "PARAMETERSFILEPATH": "c:/temp/myparameters.txt"
        ```
        
        Then create the same file in the right folder and fill it with all the needed parameters, using the same syntax used for `config.json`; e.g.:
        
        ```json
        "INPUTFILE": "S1A_imported_file.zip",
        "THRESHOLD": 5,
        "POINT": [44.2, 23.4]
        ```
        
        The decision about how to encode these parameters is left to the developer. For WASDI these are all strings. In the example above, the developers may know that THRESHOLD is a number, and POINT is couple of coordinates that must to be splitted.
        
        The only limit is that each parameter has to be written in one line.
        
        In WASPY there are these three methods available:
        
        *   `getParameter(sKey)`: return the value of the sKey Parameter
        *   `addParameter(sKey, sValue)`: updates the value of a Parameter (ONLY in memory NOT in the file)
        *   `refreshParameters()`: reads the parameter file from disk again
        
        Let’s update the code above to use the parameters file. First of all create a parameter file and set the name and path in the `config.json` file. The file (i.e., `parameters.json`) becomes:
        
        ```json
        {
          "INPUT_FILE": "S1A_imported_file.zip",
          "OUTPUT_FILE": "FloodedArea.tif"
        }
        ```
        
        Then modify the code to read the parameters without using hard-coded input:
        
        ```python
        # THE INPUT FILE IS SUPPOSED TO BE IN THE WORKSPACE
        # READ THE FILE FROM PARAMETERS
        filename = getParameter("INPUT_FILE")
        outputfilename = getParameter("OUTPUT_FILE")
        
        fullInputPath = getFullProductPath(filename)
        
        # Read the file
        EOproduct = multibandRead(fullInputPath, size, precision, offset, interleave, byteorder)
        # Elaborate the image
        EOproduct  *= 2
        
        # Save the output
        # Get The Path
        outputPath = getSavePath()
        fullOutputPath = os.path.join(outputPath, outputFileName)
        # Use the save path
        imwrite(EOproduct, fullOutputPath)
        # Ingest in WASDI
        addFileToWASDI(outputFileName)
        ```
        
Platform: UNKNOWN
Classifier: Programming Language :: Python :: 3
Classifier: License :: OSI Approved :: MIT License
Classifier: Operating System :: OS Independent
Description-Content-Type: text/markdown
