数据类型
计算函数
缩写
数据范围
每个像元所占字节数
8-bit字节型(Byte)
byte()
B
0-255
1
16-bit整型(Integer)
fix()
-32768-32767
2
16-bit无符号整型(Unsigned Int)
unit()
U
0-65535
2
32-bit长整型(Long Integer)
long()
L
大约+/-20亿
4
32-bit无符号长整型(Unsigned Long)
ulong()
UL
0-大约40亿
4
32-bit浮点型(Floating Point)
float()
.(decimal point)
+/-1e38
4
64-bit双精度浮点型(Double Precision)
double()
D
+/-1e308
8
64-bit整型(64-bit Integer)
long64()
LL
大约+/-9e18
8
无符号64-bit整型(Unsigned 64-bit)
ulong64()
ULL
0-大约2e19
8
复数型(Complex)
complex()
+/-1e38
8
双精度复数型(Double Compl
计算函数
缩写
数据范围
每个像元所占字节数
8-bit字节型(Byte)
byte()
B
0-255
1
16-bit整型(Integer)
fix()
-32768-32767
2
16-bit无符号整型(Unsigned Int)
unit()
U
0-65535
2
32-bit长整型(Long Integer)
long()
L
大约+/-20亿
4
32-bit无符号长整型(Unsigned Long)
ulong()
UL
0-大约40亿
4
32-bit浮点型(Floating Point)
float()
.(decimal point)
+/-1e38
4
64-bit双精度浮点型(Double Precision)
double()
D
+/-1e308
8
64-bit整型(64-bit Integer)
long64()
LL
大约+/-9e18
8
无符号64-bit整型(Unsigned 64-bit)
ulong64()
ULL
0-大约2e19
8
复数型(Complex)
complex()
+/-1e38
8
双精度复数型(Double Compl
