update figure in Readme

README.md

@@ -15,7 +15,8 @@ This study aimed at characterizing the rest-activity patterns in the general pop
 
 ## Findings
 
-* Four distinct rest-activity profiles were identified to describe aspects of overall amplitude, early rising time, prolonged daytime activity and biphasic pattern. [insert the profiles figure here. need access to upload figure]
+* Four distinct rest-activity profiles were identified to describe aspects of overall amplitude, early rising time, prolonged daytime activity and biphasic pattern. 
+![fPCs](image/fPCs.png)
 * Rest-activity profiles are highly associated with age, race, education levels and household income levels.
 * Rest-activity profiles differ on weekdays and weekends by demographics and socioeconomics.
 * Lower overall activity is associated with higher odds of self-reported poor or fair health.
@@ -25,7 +26,7 @@ This study aimed at characterizing the rest-activity patterns in the general pop
 In a nationally representative sample of US adults, we identified four distinct profiles for the 24-h rest-activity cycle. We found considerable variation in these profiles across different subgroups by age, gender, race/ethnicity, SES and work status. We also observed associations between rest-activity profiles and self-rated health status.
 
 ## Data
-A sample data of 50 randomly selected subjects from NHANES 2011-2014 with accelerometer data can be found [here](NHANES_sample_data.rds).
+A sample data of 50 randomly selected subjects from NHANES 2011-2014 with accelerometer data can be found [here](data/NHANES_sample_data.rds).
 
 This dataset includes the following variables:
 - SEQN
@@ -36,13 +37,13 @@ This dataset includes the following variables:
 
 ## Codes
 
-The main code to run fpca analysis on the sample data can be found [here](fPCA_analysis.R)
+The main code to run fpca analysis on the sample data can be found [here](code/fPCA_analysis.R)
 
-R function to [plot a functional object](plot_fd_new1.R)
+R function to [plot a functional object](code/plot_fd_new1.R)
 - code adapted from plot.fd{fda}
 - changes are made to present labels of xasis as clock time
 
-R function to generate Figure 1 in the published paper of [functional principal components](plot_fpca_new1.R)
+R function to generate Figure 1 in the published paper of [functional principal components](code/plot_fpca_new1.R)
 - code adapted from plot.pca.fd{fda}
 - add argument 'flip' to decide which component(s) to have sign(s) flipped ('+' to '-' or vice versa)
 - use different colors to represent component's sign