How to interpolate a different ranges of data in one array of a cell?

2 次查看（过去 30 天）
Thao Linh Tran
Thao Linh Tran 2018-9-10
评论： Thao Linh Tran 2018-9-13
I have one cell of storm data including different column arrays such as year, sid, time, name, lat, lon (look at the attachment for more detail), I would like interpolate from 3 hours interval at present to 1 hour interval for lat, lon arrays of each storm using "cubic" method. I can do for one storm as below.
t1= 0:3:lines % lines is the number of intervals of that storm
t2= 0:1:((lines-1)*3)
lat2= interp1(t1,lat1,t2,'cubic');
lon2= interp1(t1,lonw1,t2,'cubic');
How can I count the number of intervals of each storm (different storms are defined by sid) then interpolate values of lat, lon for each of them? Thanks in advance!

请先登录，再回答此问题。

采纳的回答

ADragon
ADragon 2018-9-10
Hi Thao, you can auto generate a script to import your data as a table and index into it using the column names. See attached for an example script. Then you can do something like the following to get only storm '1988219N27175'.
idx = find(data.sid == '1988219N27175');
lines = numel(idx);
lat1 = data.lat(idx);
lon1 = data.lon(idx);
AD
  1 个评论
Thao Linh Tran
Thao Linh Tran 2018-9-13

Thank you for your help. I also found another way to solve this using unique function to count the number of timesteps of each storm and then do interpolation.

[TC, ~, J]=unique(sid); 
interval = histc(J,1:numel(TC));

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Interpolation 的更多信息

标签

产品


版本

R2016b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by