Read/write MS

Anime stores various arrays read from a Measurement Set to a custom struct (see MeasurementSet). All relevant data are read from the MS into this struct using readms.

Load necessary modules:

using Anime

For this example, we will read an MS from the test/data/ directory. In the following, replace relativepath with the path to the source code of Anime.jl which contains sample MSes under test/data/.

msname = joinpath(relativepath, "test", "data", "eht1.ms")

ms = readms(msname)

Main.Anime.MeasurementSet{Float64}("/home/runner/work/Anime.jl/Anime.jl/test/data/eht1.ms", ComplexF32[-1.0273637f0 + 0.7004192f0im 0.00022555549f0 + 0.000236881f0im; 0.00084277225f0 + 0.00015272002f0im -1.0286585f0 + 0.70050967f0im;;; -1.0268914f0 + 0.70096505f0im -0.00037109957f0 - 7.938013f-5im; -0.00015597435f0 + 0.00017940946f0im -1.0270165f0 + 0.70179135f0im;;; -1.0264783f0 + 0.7030251f0im -0.0008015804f0 - 0.00023954225f0im; 0.00075147906f0 + 0.00029436644f0im -1.0263323f0 + 0.7032508f0im;;; … ;;; -1.0026518f0 + 0.7298038f0im 0.00075719744f0 - 0.0002195926f0im; -0.00021225783f0 + 0.00026368516f0im -1.0022856f0 + 0.72896194f0im;;; -1.0029718f0 + 0.7298837f0im -0.00054098084f0 + 0.00037843187f0im; -0.00077896315f0 - 0.00047400512f0im -1.0028898f0 + 0.72879726f0im;;; -1.0017743f0 + 0.7316947f0im -0.0009820868f0 - 7.177364f-5im; -0.00017453257f0 - 0.00041243472f0im -1.0010175f0 + 0.7306092f0im;;;; -0.50845253f0 + 0.6172963f0im 0.004093032f0 + 0.0068043573f0im; 0.0030970995f0 - 0.0006632369f0im -0.51168233f0 + 0.6162545f0im;;; -0.28692132f0 + 0.74844706f0im 0.00041666414f0 - 0.0016706279f0im; -0.004037518f0 + 0.00039616274f0im -0.28683165f0 + 0.75162196f0im;;; -0.032331094f0 + 0.79899156f0im 0.0005483622f0 - 0.0018148221f0im; -0.0020069683f0 - 0.0008557663f0im -0.01992612f0 + 0.8008866f0im;;; … ;;; 0.45190036f0 - 0.6542451f0im -0.0032726706f0 - 0.00012370224f0im; -0.0018764437f0 + 0.002139818f0im 0.45640397f0 - 0.65307325f0im;;; 0.22021052f0 - 0.75910276f0im -0.001552463f0 + 0.0018921307f0im; -0.0034744751f0 + 0.0005440766f0im 0.22640191f0 - 0.7628464f0im;;; -0.037598107f0 - 0.7923575f0im 0.0032136566f0 - 0.0014646426f0im; 0.0003017699f0 - 0.00040607277f0im -0.03579648f0 - 0.7901896f0im;;;; 0.13687864f0 - 0.9357863f0im -0.0007599427f0 + 0.00031076383f0im; -0.00029040492f0 - 0.0007969525f0im 0.1380428f0 - 0.9370943f0im;;; -0.9000588f0 + 0.29234886f0im -0.00040028774f0 + 0.0005337137f0im; 0.000942737f0 - 0.00029417445f0im -0.8990714f0 + 0.29478502f0im;;; 0.6638538f0 + 0.67272323f0im -0.00074885465f0 - 0.0005365417f0im; -7.630215f-5 + 0.0017965352f0im 0.6646188f0 + 0.6738753f0im;;; … ;;; -0.7156004f0 + 0.6126726f0im 0.001441895f0 - 0.00036166882f0im; -0.00033091556f0 + 0.0006213338f0im -0.7143266f0 + 0.60846215f0im;;; 0.86425245f0 + 0.36743325f0im 0.00040938405f0 - 0.0011692178f0im; 0.00044748335f0 + 3.895992f-5im 0.8665995f0 + 0.367503f0im;;; -0.059872814f0 - 0.9378186f0im -0.0010753846f0 + 0.0013258456f0im; -0.0020627473f0 + 0.0011654833f0im -0.05924886f0 - 0.936285f0im;;;; … ;;;; -0.9444557f0 - 0.028162302f0im 0.0001697395f0 - 0.005198098f0im; -0.0029194371f0 + 0.0010504747f0im -0.9392885f0 - 0.03258081f0im;;; -0.09423134f0 - 0.9408622f0im 0.009036051f0 - 0.0039186436f0im; -0.0011799693f0 - 0.005911376f0im -0.0911177f0 - 0.9549771f0im;;; 0.9223252f0 - 0.2084643f0im 0.006971996f0 + 0.00546776f0im; 0.00081147463f0 + 0.008187355f0im 0.92526937f0 - 0.20246372f0im;;; … ;;; 0.37771526f0 + 0.84558505f0im -0.001344226f0 - 0.0069346935f0im; -0.0052010408f0 + 0.0017656451f0im 0.39244896f0 + 0.8608624f0im;;; -0.8047717f0 + 0.49276406f0im -0.01338096f0 - 0.0027289472f0im; 0.0048290226f0 + 0.00038420712f0im -0.7999995f0 + 0.49375582f0im;;; -0.5804104f0 - 0.73876244f0im 0.006392474f0 + 0.00086454034f0im; 0.00025767874f0 - 0.00929447f0im -0.59148246f0 - 0.7299932f0im;;;; 0.0f0 + 0.0f0im 0.0f0 + 0.0f0im; 0.0f0 + 0.0f0im 0.0f0 + 0.0f0im;;; 0.0f0 + 0.0f0im 0.0f0 + 0.0f0im; 0.0f0 + 0.0f0im 0.0f0 + 0.0f0im;;; 0.0f0 + 0.0f0im 0.0f0 + 0.0f0im; 0.0f0 + 0.0f0im 0.0f0 + 0.0f0im;;; … ;;; 0.0f0 + 0.0f0im 0.0f0 + 0.0f0im; 0.0f0 + 0.0f0im 0.0f0 + 0.0f0im;;; 0.0f0 + 0.0f0im 0.0f0 + 0.0f0im; 0.0f0 + 0.0f0im 0.0f0 + 0.0f0im;;; 0.0f0 + 0.0f0im 0.0f0 + 0.0f0im; 0.0f0 + 0.0f0im 0.0f0 + 0.0f0im;;;; 0.0f0 + 0.0f0im 0.0f0 + 0.0f0im; 0.0f0 + 0.0f0im 0.0f0 + 0.0f0im;;; 0.0f0 + 0.0f0im 0.0f0 + 0.0f0im; 0.0f0 + 0.0f0im 0.0f0 + 0.0f0im;;; 0.0f0 + 0.0f0im 0.0f0 + 0.0f0im; 0.0f0 + 0.0f0im 0.0f0 + 0.0f0im;;; … ;;; 0.0f0 + 0.0f0im 0.0f0 + 0.0f0im; 0.0f0 + 0.0f0im 0.0f0 + 0.0f0im;;; 0.0f0 + 0.0f0im 0.0f0 + 0.0f0im; 0.0f0 + 0.0f0im 0.0f0 + 0.0f0im;;; 0.0f0 + 0.0f0im 0.0f0 + 0.0f0im; 0.0f0 + 0.0f0im 0.0f0 + 0.0f0im], Bool[0 0; 0 0;;; 0 0; 0 0;;; 0 0; 0 0;;; … ;;; 0 0; 0 0;;; 0 0; 0 0;;; 0 0; 0 0;;;; 0 0; 0 0;;; 0 0; 0 0;;; 0 0; 0 0;;; … ;;; 0 0; 0 0;;; 0 0; 0 0;;; 0 0; 0 0;;;; 0 0; 0 0;;; 0 0; 0 0;;; 0 0; 0 0;;; … ;;; 0 0; 0 0;;; 0 0; 0 0;;; 0 0; 0 0;;;; … ;;;; 0 0; 0 0;;; 0 0; 0 0;;; 0 0; 0 0;;; … ;;; 0 0; 0 0;;; 0 0; 0 0;;; 0 0; 0 0;;;; 1 1; 1 1;;; 1 1; 1 1;;; 1 1; 1 1;;; … ;;; 1 1; 1 1;;; 1 1; 1 1;;; 1 1; 1 1;;;; 1 1; 1 1;;; 1 1; 1 1;;; 1 1; 1 1;;; … ;;; 1 1; 1 1;;; 1 1; 1 1;;; 1 1; 1 1], Bool[0, 0, 0, 0, 1, 0, 0, 0, 1, 0  …  0, 0, 0, 1, 0, 0, 1, 0, 1, 1], Int32[0, 0, 0, 0, 0, 1, 1, 1, 1, 2  …  1, 1, 1, 1, 2, 2, 2, 3, 3, 4], Int32[1, 2, 3, 4, 5, 2, 3, 4, 5, 3  …  2, 3, 4, 5, 3, 4, 5, 4, 5, 5], [1010.8907438744791 1.5853914960023356e6 … -422007.2710556276 7.5229688321110895e6; -2212.7067047883756 -6.572110724709125e6 … -1.3266222772181071e6 -6930.498330703005; -1015.6189355906099 2.4081356408148813e6 … 5.68679298748029e6 7.898500058948814e6], [5.126284839e9, 5.126284839e9, 5.126284839e9, 5.126284839e9, 5.126284839e9, 5.126284839e9, 5.126284839e9, 5.126284839e9, 5.126284839e9, 5.126284839e9  …  5.126285835e9, 5.126285835e9, 5.126285835e9, 5.126285835e9, 5.126285835e9, 5.126285835e9, 5.126285835e9, 5.126285835e9, 5.126285835e9, 5.126285835e9], 4.0, Int32[1, 1, 1, 1, 1, 1, 1, 1, 1, 1  …  2, 2, 2, 2, 2, 2, 2, 2, 2, 2], 32, [2.2803125e11, 2.2809375e11, 2.2815625e11, 2.2821875e11, 2.2828125e11, 2.2834375e11, 2.2840625e11, 2.2846875e11, 2.2853125e11, 2.2859375e11  …  2.2940625e11, 2.2946875e11, 2.2953125e11, 2.2959375e11, 2.2965625e11, 2.2971875e11, 2.2978125e11, 2.2984375e11, 2.2990625e11, 2.2996875e11], 6.25e7, [-3.007099035872154; 0.21626588079481426;;], [2.2250608136e6 2.2250395297e6 … 5.08896774544e6 -5.464555493e6; -5.44005959994e6 -5.4411976292e6 … -301681.18586 -2.492927989e6; -2.48168115054e6 -2.4793033597e6 … 3.82501220561e6 2.150797176e6])

All subsequent computations are performed on this structure until the user calls writems to write the results back to the MS. This function optionally accepts an HDF5 file containing the noise to be used for populating the WEIGHT and SIGMA arrays in the MS. If no HDF5 file is provided, these arrays are initialized to 1.0 and 0.0 respectively.

We first read an existing HDF5 file containing instrument models generated according to the dimensions required by eht1.ms that was read in the previous step.

h5file = joinpath(relativepath, "test", "data", "insmodel1.h5")

writems(ms, h5file=h5file)

[ Info: Populating weight and sigma spectrum arrays...
[ Info: Write arrays to disk... 🙆

The above function call writes the contents of obs back into the MS.

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