¶ First start
Download raPPPid from GitHub and follow the instructions provided in the README. Open Matlab and navigate to the WORK folder of raPPPid. Start the GUI with
raPPPid() % start GUI of raPPPidYou should now see some information about raPPPid in the command window, and the GUI should have opened.
You will need some kind of antenna calibration for PPP processing (ANTEX files). Since you have just pulled the latest raPPPid version, these are not yet stored, so you should download them. You can do this using the following two commands:
downloadAntexFromIGS() % download latest versions of igsXX.atx from the IGS server
downloadAntexFromCODE() % download latest versions of the ANTEX files used by CODE from their serverFurthermore, you should link your CDDIS account to raPPPid. How to do this is explained below.
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¶ Connect CDDIS account
Connect your CDDIS EarthData account to raPPPid to enable data download from the CDDIS server. Otherwise, raPPPid will try to download from various IGS servers via anonymous ftp, which has proven to be less stable (e.g., data is less complete on these servers).
From raPPPid version 2.6 onwards, you can use the script ConnectCDDIS.m after starting raPPPid. Type ConnectCDDIS to the command window. Please make sure to enter your username and password in the correct format (e.g., ‘username’). Consider clearing your command history after entering your username and password.
Alternatively, you can use the description below.
- Create an EarthData Account: https://urs.earthdata.nasa.gov/
- Go to the following raPPPid folder: \CODE\OBSERVATIONS\ObservationDownload\cURL
- Copy and paste “example.netrc”
- Open the copied file (e.g., “example - Copy.netrc”)
- Replace XXX with your login credentials (username and password)
- Save the changes.
- Rename the copied file (e.g., “example - Copy.netrc”) to “.netrc”
- Under Windows you get the error message "You must type a file name".
- Therefore, rename to “.netrc."
After correctly completing this steps or using ConnectCDDIS.m, raPPPid can download data from CDDIS.
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