昨天试了一下用matlab不太适应。上手不快,所以数据预处理放在ruby里实现,得到学习样本,然后放到matlab里训练网络模型。
require 'DBI'
conn = DBI.connect('DBI:ODBC:01','elite','system_project')
current_tables=conn.tables
def get_column_names(connection,table_name)
connection.columns(table_name).collect { |i| i.name }
end
columns=get_column_names(conn,'01')
column_time=columns[0]
column_position=columns[1]
column_equip=columns[2]
column_data=columns[3]
def process_date(timestamp,tablename)
str=timestamp.to_s
arr=str.split(" ")
year=2006
month=1
day=tablename.to_i
t=arr[1].split('.')[0].split(':')
hour=t[0].to_i
min=t[1].to_i
sec=t[2].to_i
(day-1)*24*60*60+hour*60*60+min*60+sec
end
def update_time(arr,month)
arr.each do |elem|
elem[0]=process_date(elem[0],month)
end
arr.sort_by{|x| x[0]}
end
month=nil
gas_rs=wind_rs=tpt_rs=co_rs=prs_rs=Array.new
(1..2).each do |i|
if i<10
month&#61;"0"&#43;i.to_s
else
month&#61;i.to_s
end
gm&#61;conn.select_all("select #{column_time},#{column_data} from #{month} where #{column_position}&#61;21")
wm&#61;conn.select_all("select #{column_time},#{column_data} from #{month} where #{column_position}&#61;22")
tm&#61;conn.select_all("select #{column_time},#{column_data} from #{month} where #{column_position}&#61;25")
cm&#61;conn.select_all("select #{column_time},#{column_data} from #{month} where #{column_position}&#61;26")
pm&#61;conn.select_all("select #{column_time},#{column_data} from #{month} where #{column_position}&#61;4")
#update database 01 time attribute
gas_rs.push(update_time(gm,month.to_i))
wind_rs.push(update_time(wm,month.to_i))
tpt_rs.push(update_time(tm,month.to_i))
co_rs.push(update_time(cm,month.to_i))
prs_rs.push(update_time(pm,month.to_i))
end
def create_seq(gas,wind,tpt,co,prs)
value&#61;Array.new
(0..gas.length-2).to_a.each do |i|
value[i]&#61;[gas[i][0],gas[i][1],wind[i][1],tpt[i][1],co[i][1],prs[i][1]]
end
value
end
seq1&#61; create_seq(gas_rs,wind_rs,tpt_rs,co_rs,prs_rs).sort
msq &#61; DBI.connect(&#39;DBI:ODBC:seq&#39;,&#39;root&#39;,&#39;&#39;)
msq.do("CREATE TABLE seq1 (
time INT NOT NULL primary key,
gas float NOT NULL,
wind_speed FLOAT,
temperature FLOAT,
carbon_monoxide FLOAT,
air_pressure FLOAT)")
msq.do("INSERT INTO seq1 (time,gas,wind_speed,temperature,carbon_monoxide,air_pressure)
VALUES
(#{seq1[0]},#{seq1[1].to_f},#{seq1[2].to_f},#{seq1[3].to_f},#{seq1[4].to_f})
")
msq.do("INSERT INTO seq1 (time)
VALUES
(#{seq1[0].to_i})
")
(0..seq1.length-1).each do |i|
msq.do("INSERT INTO seq1 (time,gas,wind_speed,temperature,carbon_monoxide,air_pressure)
VALUES
(#{seq1[i][0]},#{seq1[i][1]},#{seq1[i][2]},#{seq1[i][3]},#{seq1[i][4]},#{seq1[i][5]})
")
end