Matlab to Google Sheets (matlab2sheets)

Use this together with GetGoogleSpreadsheet from the File Exchange and you can read/write to Google Sheets from MATLAB. Inspired by an older set of functions (Matlab to Google Spreadsheets) that no longer works with Google's new v4 API.
--
status = mat2sheets(spreadsheetID, sheetID, sheetpos, d)
% This function takes values from an array or cell array and places them in
% a Google spreadsheet. It requires the one-time use of RunOnce (see below)
% SYNTAX: status = mat2sheets(spreadsheetID, sheetID, pos, d)
%
% ARGUMENTS:
% spreadsheetID: (string), identifier from URL of your Google Sheet
% sheetID: (string), another identier from URL
% pos: 1x2 array with indices for [sheetrow, sheetcolumn]
% to start pasting data
% d: array or cell array of data to paste into Sheet. If
% [], pos indicates row or range of rows [start stop]
% to delete
%
% RETURNS: status (0=failed, 1=success)
%
% EXAMPLES:
% For sheet with the following URL:
% https://docs.google.com/spreadsheets/d/1GPd-vBsX5VUejz5hrxE/edit#gid=552
%
% A call may look like:
% mat2sheets('1GPd-vBsX5VUejz5hrxE', '552', [2 3], [1 2 3 4 5])
%
% Would put values 1,2,3,4,5 into cells C2,D2,E2,F2,G2, respectively
%
% To delete row(s)
% mat2sheets('1GPd-vBsX5VUejz5hrxE', '552', 2, []) % delete row 2
% mat2sheets('1GPd-vBsX5VUejz5hrxE', '552', [2 10], []) % delete rows 2-10 inclusive
%
% USING RunOnce().
% Before using this code, you've got to enable the Drive/Sheets APIs via:
% https://console.developers.google.com/
% Here, you will "create credentials" via an OAuth 2.0 client ID that comes
% with a Client ID and Client Secret. These codes are the two arguments of
% RunOnce(client_id, client_secret). Run RunOnce with both of these
% codes passed as strings, and follow the instructions.
%
% The following code is inspired by, and makes use of, code
% originally published in the file exchange by Claudiu Giurumescu.
% (https://www.mathworks.com/matlabcentral/fileexchange/31221-matlab-to-google-spreadsheets)
%
% I wrote this to accomodate for latest changes in Google API, added some
% comments, and simplified it all so that it can be implemented by the
% average user (hopefully!)
%
% Additionally, I use loadjson by Qianqian Fang to read the input streams
% from Google for learning meta data about the sheets
% (https://www.mathworks.com/matlabcentral/fileexchange/33381-jsonlab--a-toolbox-to-encode-decode-json-files)
%
% andrew robert bogaard 26 sept 2016
% updated 25 july 2017 (delete rows)
% abogaard@uw.edu