# Synopse

Display a structuring element as an image.

• y = iaseshow(B, option="NORMAL")
• y: Image
• B: Structuring Element
• option: String 'NORMAL', ' EXPAND' or ' NON-FLAT'
```01. from numpy import *
02. from string import upper
03.
04. def iaseshow(B, option="NORMAL"):
05.     from ia870 import iaisbinary, iaintersec, iagray, iabinary
06.     from ia870 import iasedil, iaero, iabshow
07.
08.     option = upper(option)
09.     if option=='NON-FLAT':
10.         y = array([0],int32)
11.         if iaisbinary(B):
12.             B = iaintersec( iagray(B,'int32'),0)
13.     elif option=='NORMAL':
14.         if iaisbinary(B):    y=iabinary([1])
15.         else:
16.            y=array([0],int32)
17.     elif option=='EXPAND':
18.         assert iaisbinary(B), 'This option is only available with flat SE'
19.         y = iasedil( iabinary([1]),B)
20.         b1= iabinary(y>=0)
21.         b0= b1<0
22.         b0[shape(b0)[0]/2, shape(b0)[1]/2] = 1
23.         y = iabshow(b1,y,b0)
24.         return y
25.     else:
26.         print 'iaseshow: not a valid flag: NORMAL, EXPAND or NON-FLAT'
27.
28.     y = iasedil(y,B)
29.     return y```

# Description

iaseshow used with the option EXPAND generates an image y that is a suitable graphical representation of the structuring element B. This function is useful to convert a structuring element to an image. The origin of the structuring element is at the center of the image. If B is flat, y is binary, otherwise, y is signed int32 image. When using the option NON-FLAT, the output y is always a signed int32 image.

# Examples

## Example 1

```1. from ia870 import iaseshow, iasecross
2.
3. b=iasecross(3)
4. print iaseshow(b)
5. print iaseshow(b,'NON-FLAT')
6. a = iaseshow(b,'EXPAND')
```[[False False False  True False False False]
[False False  True  True  True False False]
[False  True  True  True  True  True False]
[ True  True  True  True  True  True  True]
[False  True  True  True  True  True False]
[False False  True  True  True False False]
[False False False  True False False False]]
[[-2147483647 -2147483647 -2147483647           0 -2147483647 -2147483647
-2147483647]
[-2147483647 -2147483647           0           0           0 -2147483647
-2147483647]
[-2147483647           0           0           0           0           0
-2147483647]
[          0           0           0           0           0           0
0]
[-2147483647           0           0           0           0           0
-2147483647]
[-2147483647 -2147483647           0           0           0 -2147483647
-2147483647]
[-2147483647 -2147483647 -2147483647           0 -2147483647 -2147483647
-2147483647]]
```

## Example 2

```1. from ia870 import iasedisk, iaseline
2.
3. b1=iasedisk(2,'2D','EUCLIDEAN')