diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ba39cc5
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+Manifest.toml
diff --git a/Project.toml b/Project.toml
new file mode 100644
index 0000000..f1c993d
--- /dev/null
+++ b/Project.toml
@@ -0,0 +1,10 @@
+name = "CoordVisualize"
+uuid = "4c41ebcf-33aa-4478-9aac-83d12758d145"
+authors = ["qwjyh <urataw421@gmail.com>"]
+version = "0.1.0"
+
+[deps]
+ColorSchemes = "35d6a980-a343-548e-a6ea-1d62b119f2f4"
+Dates = "ade2ca70-3891-5945-98fb-dc099432e06a"
+GLMakie = "e9467ef8-e4e7-5192-8a1a-b1aee30e663a"
+YAML = "ddb6d928-2868-570f-bddf-ab3f9cf99eb6"
diff --git a/README.adoc b/README.adoc
new file mode 100644
index 0000000..2025189
--- /dev/null
+++ b/README.adoc
@@ -0,0 +1,6 @@
+= CoordVisualize
+
+== Parsing log, taggin and exporting
+
+== Reading data & Visualization, inspecting
+
diff --git a/src/CoordVisualize.jl b/src/CoordVisualize.jl
new file mode 100644
index 0000000..73ecc03
--- /dev/null
+++ b/src/CoordVisualize.jl
@@ -0,0 +1,8 @@
+module CoordVisualize
+
+using Dates
+
+include("typedef.jl")
+include("parser.jl")
+
+end # end module CoordVisualize
diff --git a/src/parser.jl b/src/parser.jl
new file mode 100644
index 0000000..4d1703c
--- /dev/null
+++ b/src/parser.jl
@@ -0,0 +1,90 @@
+using CoordVisualize: CoordLog
+using Dates
+
+"""
+    parse_log(filepath::AbstractString; interactive=false)::Vector{CoordLog}
+
+Parse raw coordinates log from tracecoords to vector of `CoordLog`.
+Each logging is converted to one `CoordLog`.
+
+If keyword argument `interactive` is set to `true`, prompts will be shown to
+receive custom notes for each `CoordLog`.
+Otherwise the note is set to ""(empty string).
+"""
+function parse_log(filepath::AbstractString; interactive=false)::Vector{CoordLog}
+    istracing::Bool = false
+    coords_trace = Vector{Vector{Float64}}(undef, 0) # SVector ?
+    ret = Vector{CoordLog}()
+    log_date = DateTime(0)
+    for (i, l) in enumerate(readlines(filepath))
+        # skip logs not from tracecoord
+        if match(r"^\[TRACECOORDS\]", l) |> isnothing
+            continue
+        end
+        if !istracing
+            # not tracing
+
+            # if starting
+            if match(r"Logging starting", l) |> !isnothing
+                @debug "Logging started at l:$(i)"
+                istracing = true
+                coords_trace = Vector{Vector{Float64}}(undef, 0) # SVector ?
+                log_date = try
+                    s = match(r"\".+\"").match
+                    parse(DateTime, s[2:end-1])
+                catch e
+                    @error "Failed to parse date at line $(i), file $(filepath)"
+                    DateTime(0)
+                end
+            end
+        else
+            if match(r"Logging stopping", l) |> !isnothing
+                @debug "Logging stopped at l:$(i)"
+                istracing = false
+
+                # get note in interactive parsing
+                if interactive
+                    println("type note for the log at $(log_date)UTC")
+                    note = readline()
+                else
+                    note = ""
+                end
+
+                coords_trace = mapreduce(permutedims, vcat, coords_trace)
+                push!(
+                    ret,
+                    CoordLog(coords_trace, log_date, note)
+                )
+
+                continue
+            end
+
+            # skip non coordinates
+            if match(r"Coordinate:", l) |> isnothing
+                continue
+            end
+
+            # parse coordinates
+            coord = try
+                match(r"\(.*\)", l).match |>
+                (s -> split(s[2:end-1], ',')) .|>
+                (x -> parse(Float64, x))
+            catch e
+                error("Failed to parse coordinate at line $(i)")
+            end
+            push!(coords_trace, coord)
+        end
+    end
+    ret
+end
+
+function parse_log(filepaths::Vector{T}; interactive=false)::Vector{CoordLog} where {T <: AbstractString}
+    map(filepaths) do filepath
+        parse_log(filepath; interactive=interactive)
+    end |> Iterators.flatten |> collect
+end
+CoordLog(
+    [1.0 2.0 3.0; 4.0 5.0 6.0],
+    Dates.now(),
+    "a"
+)
diff --git a/src/typedef.jl b/src/typedef.jl
new file mode 100644
index 0000000..b8ea29f
--- /dev/null
+++ b/src/typedef.jl
@@ -0,0 +1,7 @@
+using Dates
+struct CoordLog{T <: AbstractFloat}
+    coords::Matrix{T}
+    logdate::DateTime
+    note::String
+end
+
diff --git a/test/runtests.jl b/test/runtests.jl
new file mode 100644
index 0000000..e69de29