# Loading .dat file for 2D DC Resistivity Least-Squares Inversio **URL:** \ **Category:** DC and IP\ **Created:** [July 1, 2022, 2:00am UTC](https://simpeg.discourse.group/t/loading-dat-file-for-2d-dc-resistivity-least-squares-inversio/341 "2022-07-01T02:00:45Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![linaricoar](https://avatars.discourse-cdn.com/v4/letter/l/839c29/32.png) [@linaricoar](https://simpeg.discourse.group/u/linaricoar)\ **Post date:** [July 1, 2022, 2:00am UTC](https://simpeg.discourse.group/t/loading-dat-file-for-2d-dc-resistivity-least-squares-inversio/341/1 "2022-07-01T02:00:46Z")
Hi, I wanna load the chargeability data of a survey stored in a .dat file to run a DC 2d inversion code, but my survey data is sorted differently from the tutorials and the functions, such as read\_dcip2d\_ubc and read\_dcip\_xyz are not working to read my data. What should I do ?. My survey data is: L3 20220610s.bin 50.00000 6 239 0 1 Chargeability mV/V 0.24000, 2.00000 -100.00000, 100.00000, 1.00000, 198.14655, 2.17000 -50.00000, 100.00000, 1.00000, 201.48918, 2.20000 0.00000, 100.00000, 1.00000, 198.19679, 2.24000 50.00000, 100.00000, 1.00000, 202.35626, 2.32000 100.00000, 100.00000, 1.00000, 215.67659, 2.87000 150.00000, 100.00000, 1.00000, 466.45108, 2.90000 200.00000, 100.00000, 1.00000, 466.45108, 2.85000 250.00000, 100.00000, 1.00000, 304.70935, 2.43000 300.00000, 100.00000, 1.00000, 243.48601, 2.11000 350.00000, 100.00000, 1.00000, 193.73576, 2.16000 400.00000, 100.00000, 1.00000, 194.66565, 2.96000 450.00000, 100.00000, 1.00000, 325.91196, 2.96000 500.00000, 100.00000, 1.00000, 394.43323, 2.95000 550.00000, 100.00000, 1.00000, 365.71909, 2.97000 600.00000, 100.00000, 1.00000, 332.83289, 2.96000 650.00000, 100.00000, 1.00000, 263.95660, 3.03000 700.00000, 100.00000, 1.00000, 224.28456, 2.92000 750.00000, 100.00000, 1.00000, 223.93274, 3.59000 800.00000, 100.00000, 1.00000, 197.92033, 2.83000 900.00000, 100.00000, 1.00000, 477.55978, 4.23000 1000.00000, 100.00000, 1.00000, 623.37994, 4.11000 1100.00000, 100.00000, 1.00000, 731.77753, 4.99000 1200.00000, 100.00000, 1.00000, 292.29379, 4.96000 1300.00000, 100.00000, 1.00000, 212.79890, 9.23000 1400.00000, 100.00000, 1.00000, 522.89923, 3.64000 1500.00000, 100.00000, 1.00000, 626.81061, 23.89000 1700.00000, 100.00000, 1.00000, 371.46191, 2.59000 850.00000, 100.00000, 1.50000, 480.94641, 4.78000 950.00000, 100.00000, 1.50000, 645.85645, 4.17000 1050.00000, 100.00000, 1.50000, 808.90509, 5.53000 1150.00000, 100.00000, 1.50000, 299.94354, 3.85000 1250.00000, 100.00000, 1.50000, 261.70251, 26.89000 1350.00000, 100.00000, 1.50000, 296.43283, 1.93000 1450.00000, 100.00000, 1.50000, 585.96198, 4.90000 1550.00000, 100.00000, 1.50000, 391.48172, 0.01000 1650.00000, 100.00000, 1.50000, 384.97861, 6.08000 -100.00000, 100.00000, 2.00000, 201.50175, 2.26000 -50.00000, 100.00000, 2.00000, 218.91875, 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5.57000 1200.00000, 100.00000, 2.00000, 330.84741, 4.30000 1300.00000, 100.00000, 2.00000, 330.84741, 3.75000 1400.00000, 100.00000, 2.00000, 457.96884, 2.63000 1600.00000, 100.00000, 2.00000, 486.99716, 35.38000 850.00000, 100.00000, 2.50000, 843.08563, 6.26000 950.00000, 100.00000, 2.50000, 562.64355, 4.85000 1050.00000, 100.00000, 2.50000, 672.87421, 6.26000 1150.00000, 100.00000, 2.50000, 350.04410, 5.11000 1350.00000, 100.00000, 2.50000, 398.42465, 6.87000 1450.00000, 100.00000, 2.50000, 403.81247, 6.68000 1550.00000, 100.00000, 2.50000, 387.04422, 4.54000 -100.00000, 100.00000, 3.00000, 412.72989, 2.38000 -50.00000, 100.00000, 3.00000, 411.90048, 2.36000 0.00000, 100.00000, 3.00000, 412.57907, 2.35000 50.00000, 100.00000, 3.00000, 417.17838, 2.34000 100.00000, 100.00000, 3.00000, 431.35318, 2.35000 150.00000, 100.00000, 3.00000, 496.87427, 2.95000 200.00000, 100.00000, 3.00000, 555.45874, 3.56000 250.00000, 100.00000, 3.00000, 604.76917, 4.16000 300.00000, 100.00000, 3.00000, 600.84845, 4.16000 350.00000, 100.00000, 3.00000, 560.28418, 4.04000 400.00000, 100.00000, 3.00000, 503.05695, 3.81000 450.00000, 100.00000, 3.00000, 422.90863, 3.56000 500.00000, 100.00000, 3.00000, 339.66898, 3.24000 550.00000, 100.00000, 3.00000, 261.10406, 2.91000 600.00000, 100.00000, 3.00000, 245.72282, 2.78000 650.00000, 100.00000, 3.00000, 241.87749, 2.73000 700.00000, 100.00000, 3.00000, 240.06796, 2.73000 750.00000, 100.00000, 3.00000, 232.90511, 2.71000 800.00000, 100.00000, 3.00000, 228.68282, 2.70000 900.00000, 100.00000, 3.00000, 363.41943, 3.17000 1000.00000, 100.00000, 3.00000, 521.60486, 5.15000 1100.00000, 100.00000, 3.00000, 300.61273, 4.14000 1200.00000, 100.00000, 3.00000, 300.61273, 4.14000 1300.00000, 100.00000, 3.00000, 354.29626, 4.81000 1400.00000, 100.00000, 3.00000, 408.50757, 9.59000 1500.00000, 100.00000, 3.00000, 563.07391, 75.55000 850.00000, 100.00000, 3.50000, 565.26050, 4.28000 950.00000, 100.00000, 3.50000, 550.21851, 4.25000 1050.00000, 100.00000, 3.50000, 518.35333, 4.12000 1250.00000, 100.00000, 3.50000, 416.82022, 7.46000 1450.00000, 100.00000, 3.50000, 354.97012, 8.84000 -100.00000, 100.00000, 4.00000, 523.01239, 2.73000 -50.00000, 100.00000, 4.00000, 530.92914, 2.86000 0.00000, 100.00000, 4.00000, 551.66370, 3.07000 50.00000, 100.00000, 4.00000, 580.56635, 3.43000 100.00000, 100.00000, 4.00000, 604.31677, 3.74000 150.00000, 100.00000, 4.00000, 624.79993, 3.90000 200.00000, 100.00000, 4.00000, 641.63885, 4.06000 250.00000, 100.00000, 4.00000, 623.92029, 4.06000 300.00000, 100.00000, 4.00000, 570.51324, 4.02000 350.00000, 100.00000, 4.00000, 499.51321, 4.00000 400.00000, 100.00000, 4.00000, 428.13626, 3.88000 450.00000, 100.00000, 4.00000, 357.38757, 3.77000 500.00000, 100.00000, 4.00000, 296.06369, 3.64000 550.00000, 100.00000, 4.00000, 255.47432, 3.53000 600.00000, 100.00000, 4.00000, 237.88139, 3.44000 650.00000, 100.00000, 4.00000, 236.87610, 3.46000 700.00000, 100.00000, 4.00000, 235.74510, 3.47000 750.00000, 100.00000, 4.00000, 234.23715, 3.48000 800.00000, 100.00000, 4.00000, 255.72565, 3.50000 900.00000, 100.00000, 4.00000, 340.67429, 3.65000 1000.00000, 100.00000, 4.00000, 383.52563, 3.92000 1100.00000, 100.00000, 4.00000, 388.55215, 4.13000 1300.00000, 100.00000, 4.00000, 316.29556, 6.81000 1400.00000, 100.00000, 4.00000, 316.29556, 6.81000 850.00000, 100.00000, 4.50000, 357.35931, 4.12000 1050.00000, 100.00000, 4.50000, 369.95554, 7.31000 1150.00000, 100.00000, 4.50000, 374.15427, 7.83000 1250.00000, 100.00000, 4.50000, 386.12845, 20.82000 1350.00000, 100.00000, 4.50000, 387.37253, 24.80000 -100.00000, 100.00000, 5.00000, 945.49371, 4.65000 -50.00000, 100.00000, 5.00000, 918.91583, 4.63000 0.00000, 100.00000, 5.00000, 879.33179, 4.53000 50.00000, 100.00000, 5.00000, 807.32648, 4.42000 100.00000, 100.00000, 5.00000, 751.34326, 4.29000 150.00000, 100.00000, 5.00000, 710.43976, 4.21000 200.00000, 100.00000, 5.00000, 654.64508, 4.11000 250.00000, 100.00000, 5.00000, 572.64948, 4.09000 300.00000, 100.00000, 5.00000, 490.27695, 3.99000 350.00000, 100.00000, 5.00000, 413.18225, 3.81000 400.00000, 100.00000, 5.00000, 349.09378, 3.67000 450.00000, 100.00000, 5.00000, 302.53537, 3.52000 500.00000, 100.00000, 5.00000, 293.86456, 3.37000 550.00000, 100.00000, 5.00000, 279.53891, 3.23000 600.00000, 100.00000, 5.00000, 268.22919, 3.15000 650.00000, 100.00000, 5.00000, 263.32828, 3.09000 700.00000, 100.00000, 5.00000, 259.93539, 3.06000 750.00000, 100.00000, 5.00000, 258.05042, 3.02000 800.00000, 100.00000, 5.00000, 266.15573, 3.03000 900.00000, 100.00000, 5.00000, 275.76901, 3.34000 1000.00000, 100.00000, 5.00000, 281.04688, 3.46000 1200.00000, 100.00000, 5.00000, 260.31238, 48.90000 850.00000, 100.00000, 5.50000, 369.73090, 14.49000 950.00000, 100.00000, 5.50000, 369.73093, 14.49000 1250.00000, 100.00000, 5.50000, 245.06464, 8.56000 -100.00000, 100.00000, 6.00000, 1132.10437, 4.79000 -50.00000, 100.00000, 6.00000, 1086.18677, 4.78000 0.00000, 100.00000, 6.00000, 1040.00537, 4.76000 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**Author:** ![Coastal0](https://avatars.discourse-cdn.com/v4/letter/c/3da27b/32.png) [@Coastal0](https://simpeg.discourse.group/u/Coastal0)\ **Post date:** [August 31, 2022, 5:53am UTC](https://simpeg.discourse.group/t/loading-dat-file-for-2d-dc-resistivity-least-squares-inversio/341/2 "2022-08-31T05:53:35Z")
Hi Lina, Your data is in RES2DINV file format, and looks like it may have been exported from an IRIS system (e.g. ELREC, SYSCAL, etc.)? If you have access to “L3 20220610s.bin” you may be able to export to other data formats using PROSYS2 (search via IRIS website). Alternatively, you can reformat the data file yourself, with I’m not sure what format the array is given in though - it doesn’t seem to be a general format!