Getting errors in Guassian Peak fitting

[Aojha]

Hi all,

I am trying to fit Guassian curve on following data

Index	Value
12	237
13	214
14	214
15	218
16	254
17	236
18	271
19	243
20	278
21	282
22	272
23	296
24	309
25	312
26	337
27	342
28	344
29	344
30	358
31	373
32	425
33	432
34	436
35	466
36	508
37	553
38	596
39	613
40	663
41	701
42	744
43	808
44	859
45	924
46	988
47	1059
48	1188
49	1299
50	1415
51	1542
52	1631
53	1775
54	1929
55	2018
56	2225
57	2458
58	2679
59	2956
60	3229
61	3408
62	3666
105	3546
106	3286
107	3023
108	2789
109	2598
110	2385
111	2187
112	1986
113	1841
114	1701
115	1616
116	1485
117	1356
118	1271
119	1165
120	1084
121	1013
122	945
123	884
124	827
125	785
126	721
127	660
128	620
129	606
130	581
131	535
132	519
133	500
134	462
135	438
136	449
137	426
138	381
139	375
140	366
141	338
142	342
143	335
144	302
145	313
146	293
147	291
148	282
149	276
150	275
151	280
152	269
153	255
154	250
155	252
156	248
157	252
158	255
159	242

But Guassian peak fit vi is fitting curve only for one side lobe. result is attached. Can anyone tell me how to avoid this problem

[DSPGuy]

Try specifying an initial guess.  I used:

initial amplitude = 6000

initial center = 80

initial standard deviation = 10

initial offset = 200

-Jim

[Aojha]

HI DSPGuy,

Thanks for the suggestion. will try this.