Vecxt IO (#89)

* .

* Simple IO. Tidy Mnist

* Nearly have floaty mnist

* mnist float

* .

* [autofix.ci] apply automated fixes

* .

* [autofix.ci] apply automated fixes

* Fix double version

* .

* [autofix.ci] apply automated fixes

* .

---------

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

Author: Quafadas

.github/copilot-instructions.md

@@ -16,7 +16,7 @@ If you are on windows, use `mill`, not `./mill`.
 
 Each module contains it's own build definition in the package.mill file in it's module directory.
 
-- BUILDS: Mill cold compilation takes 2 minutes or so. Stay patient!
+- BUILDS: Cold compilation may take 1 minute or so the _first_ time any compilation is run. Subsequent (incremental) compilations are fast.
 - Compile specific platforms (e.g. jvm) with `./mill vecxt.jvm.compile` or `./mill vecxt.js.compile` etc.
 - Run all tests by following with the same pattern `./mill vecxt.__.test`
 - Format code with `./mill mill.scalalib.scalafmt.ScalafmtModule/`. CI will enforce formatting, and will fail if code is not formatted.

build.mill

@@ -48,6 +48,7 @@ object V:
   val jsBSP = false
   val nativeBSP = false
   val jvmBSP = true
+  val oslib = mvn"com.lihaoyi::os-lib::0.11.5"
 end V
 
 trait VecxtPublishModule extends PublishModule, ScalaModule, ScalafixModule:

experiments/package.mill

@@ -15,11 +15,11 @@ object `package` extends ScalaModule:
   override def forkArgs = super.forkArgs() ++ build.vecIncubatorFlag
   // override def mainClass = Some("mnist")
 
-  override def moduleDeps = Seq(build.vecxt.jvm, build.vecxtensions.jvm, build.vecxt_re.jvm)
+  override def moduleDeps = Seq(build.vecxt.jvm, build.vecxtensions.jvm, build.vecxt_re.jvm, build.vecxt_io.jvm)
   override def mvnDeps = super.mvnDeps() ++ Seq(
     mvn"com.lihaoyi::os-lib::0.10.4",
     mvn"io.github.quafadas::scautable::0.0.35",
-    mvn"io.github.quafadas::dedav4s::0.10.4",
+    mvn"io.github.quafadas::dedav4s::0.10.5",
     mvn"org.apache.logging.log4j:log4j-core:2.24.3" // Required by Apache POI for Excel
   )
 end `package`

experiments/resources/pixelPlot.vg.json

@@ -1,26 +1,28 @@
 {
   "$schema": "https://vega.github.io/schema/vega-lite/v5.json",
-  "description": "Plot a single pixel at (x, y) with opacity c (0=transparent, 255=opaque).",
+  "description": "Plot a single pixel at (x, y) with opacity c (0=transparent, 1=opaque).",
   "data": {
     "values": [
-      {"x": 50, "y": 30, "opacity": 255}
+      {"x": 50, "y": 30, "opacity": 1}
     ]
   },
   "mark": {
     "type": "rect",
-    "width": 1,
-    "height": 1,
+    "width": 10,
+    "height": 10,
     "color": "black"
   },
   "encoding": {
-    "x": {"field": "x", "type": "quantitative"},
-    "y": {"field": "y", "type": "quantitative"},
+    "x": {"field": "x", "type": "quantitative", "axis": {"ticks": false, "labels": false, "title": null}},
+    "y": {"field": "y", "type": "quantitative", "axis": {"ticks": false, "labels": false, "title": null}},
     "opacity": {
       "field": "opacity",
       "type": "quantitative",
-      "scale": {"domain": [0, 255], "range": [0, 1]}
+      "scale": {"domain": [0, 1], "range": [0, 1]},
+      "legend": null
     }
   },
   "width": 28,
-  "height": 28
+  "height": 28,
+  "title": "A Random Pixel Plot"
 }