The delsample method can only be used for a single timeseries object Indices must be specified by a vector of integers. Specified indices are not integers. Specified indices are out of bounds. Time must be a numeric value. The time value cannot be converted to the timeseries format The Value input must be a date character vector/string, cell array of date character vectors/strings, or numeric You must specify a sample index or time to delete each sample. The second argument must be a character vector/string specifying the method that identifies the samples to be deleted.