IDL中image如何定位

不语

PRO this_is_se_demo
!P.Multi = [0, 2, 2, 0, 1]
file =FILEPATH('Desert.jpg', root_dir = 'D:\', subdirectory = ['photo'])
image = READ_IMAGE(file)
TV,image,true=1
num=7
if (num ge 3) and (num lt 6) THEN BEGIN
!P.Position = [0.1,0.5, 0.1+0.4, 0.5+0.4]
file =FILEPATH('clouds.png', root_dir = 'D:\', subdirectory = ['photo'])
image = READ_IMAGE(file)
TV,image,true=1
ENDIF ELSE IF (num ge 1) and (num lt 3) THEN BEGIN
!P.Position = [0.1, 0.1, 0.5, 0.5]
file =FILEPATH('sun.png', root_dir = 'D:\', subdirectory = ['photo'])
image = READ_IMAGE(file)
TV, image,true=1
ENDIF ELSE IF (num ge 6) and (num lt 10) THEN BEGIN
!P.Position = [0.5, 0.5, 0.9, 0.9]
file =FILEPATH('rain.png', root_dir = 'D:\', subdirectory = ['photo'])
image = READ_IMAGE(file)
TV, image,true=1
ENDIF ELSE BEGIN
!P.Position = [0.5, 0.1, 0.9, 0.5]
file =FILEPATH('snow.png', root_dir = 'D:\', subdirectory = ['photo'])
image = READ_IMAGE(file)
TV, image,true=1
ENDELSE
end

定位Image，设置的position无效

不语

已解决， TVScl,image,96,192,true=1