Top "Time-series" questions

A Time series is a sequence of data points with values measured at successive times (either in continuous time or at discrete time periods).

Newey-West standard errors for OLS in Python?

I want to have a coefficient and Newey-West standard error associated with it. I am looking for Python library (ideally, …

python statistics time-series statsmodels
Hidden Markov Model for multiple observed variables

I am trying to use a hidden Markov model (HMM) for a problem where I have M different observed variables (…

machine-learning time-series hidden-markov-models
Transforming a time-series into a data frame and back

The output of a time-series looks like a data frame: ts(rnorm(12*5, 17, 8), start=c(1981,1), frequency = 12) Jan Feb Mar Apr May …

r dataframe time-series
Error in na.fail.default(as.ts(x)) : missing values in object in time series forecasting

I am trying to perform fit diagnostic on a salesData forecast using acf(SalesDataFC$residuals) however I am getting an …

r time-series analytics forecasting
How to Get Current Weather via Web Services

I am attempting to get the current weather given a zip code or a set of latitude/longitude coordinates. It …

c# web-services time-series weather
Calculate angle (degrees) in Python between line (with slope x) and horizontal

I need to calculate the angle between a line and the horizontal. My high school maths seems to be failing …

python numpy math time-series angle
Time Series Analysis - unevenly spaced measures - pandas + statsmodels

I have two numpy arrays light_points and time_points and would like to use some time series analysis methods …

python pandas machine-learning time-series statsmodels
storing massive ordered time series data in bigtable derivatives

I am trying to figure out exactly what these new fangled data stores such as bigtable, hbase and cassandra really …

cassandra finance hbase bigtable time-series
Explaining the forecasts from an ARIMA model

I am trying to explain to myself the forecasting result from applying an ARIMA model to a time-series dataset. The …

r time-series forecasting
Reshaping time series data from wide to tall format (for plotting)

I have a data frame containing multiple time series of returns, stored in columns. The first column contains dates, and …

r time-series