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Host(manage) multiple path by `dataclass` and `descriptor` in Python
发表于|更新于|Personal Experiences|Python
This article shows an approach in Python about how to host(manage) multiple paths from a config file and only expose one result to the user automatically. Introduction The multiple paths means a group of paths in a config file like: 123path: Windows: E:/Datasets/BraTS/BraTS2022 Linux: /mnt/e/Datasets/BraTS/BraTS2022 Or, it can be regarded as a nested dict in Python as: 123456multiple_paths = { 'path':{ 'Windows':'E:/Datasets/BraTS/BraTS2022'...
Progress bar with multiple backends
发表于|更新于|Personal Experiences|Python
This article introduces a simple manner about integrating different Progress Bar backends in Python. Introduction Progress Bar: A progress bar is a graphical control element used to visualize the progression of an extended computer operation, such as a download, file transfer, or installation. Sometimes, the graphic is accompanied by a textual representation of the progress in a percent format. The concept can also be regarded to include “playback bars” in media players that keep track of th...
Reset ACL/SDDL to deal with authorization problems in ReFS or NTFS
发表于|更新于|Personal Experiences|Windows•File System
This article records my procedures for dealing with authorization problems in ReFS or NTFS with Windows system. In this article, we do not talk about the relationship between Authorization and File System. And we do not differentiate which File System can support the corresponding operations and rules about Authorization. That is, if we encounter authorization problems, we almost can follow the actions in this article, since if a File System does not support authorization operations, it may n...
There may be no need to fully understand Junction, Hard Link and Symbolic Link in NTFS
发表于|更新于|Personal Experiences|Windows•File System
In normal scenarios, the concepts and characteristics of hard links, junctions, and symbolic links are intertwined. Only a few words cannot tell them clearly. However, in terms of daily use, why must we understand 100% of their differences and similarities? Sometimes, it is enough to remember these three concepts’ main features and differences, plus some experience. From the perspective of an average Windows user, this article introduces hard links, junctions, and symbolic links in Windows fi...
About `coordinate systems and affines` in Nibabel
发表于|更新于|Personal Experiences|Machine Learning•Computer Vision•Medical Imaging
There are many continuously updated Python libraries that can be used or specialized for Medical Imaging, such as, SimpleITK, NiBabel, scikit-image, etc. Each medical imaging tool has its own internal data structure, but they all serve real-world people of interest. Therefore, when interacting with people, each of these tools is bound to exhibit characteristics that are independent of its own data structure and only relevant to the real world items. In this article, we are around coordinate s...
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Discuss the mathematics of apportionment when splitting the machine learning dataset into several parts by proportions
Analyses of round function
How to compile TensorFlow-GPU both on Linux (WSL2) and Window
Code snippets to configure Windows
Reset ACL/SDDL to deal with authorization problems in ReFS or NTFS
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` const blob = new Blob([htmlSource], { type: 'text/html;charset=utf-8' }) const url = URL.createObjectURL(blob) window.open(url, '_blank', 'noopener') setTimeout(() => URL.revokeObjectURL(url), 30000) } const attachMermaidViewerButton = wrap => { let btn = wrap.querySelector('.mermaid-open-btn') if (!btn) { btn = document.createElement('button') btn.type = 'button' btn.className = 'mermaid-open-btn' wrap.appendChild(btn) } btn.innerHTML = '' if (!btn.__mermaidViewerBound) { btn.addEventListener('click', e => { e.preventDefault() e.stopPropagation() const svg = wrap.__mermaidOriginalSvg || wrap.querySelector('svg') if (!svg) return const initViewBox = wrap.__mermaidInitViewBox if (typeof svg === 'string') { openSvgInNewTab({ source: svg, initViewBox }) return } openSvgInNewTab({ source: svg, initViewBox }) }) btn.__mermaidViewerBound = true } } // Zoom around a point (px, py) in the SVG viewport (in viewBox coordinates) const zoomAtPoint = (vb, factor, px, py) => { const w = vb[2] * factor const h = vb[3] * factor const nx = px - (px - vb[0]) * factor const ny = py - (py - vb[1]) * factor return [nx, ny, w, h] } const initMermaidGestures = wrap => { const svg = wrap.querySelector('svg') if (!svg) return // Ensure viewBox exists so gestures always work const initVb = getSvgViewBox(svg) wrap.__mermaidInitViewBox = initVb wrap.__mermaidCurViewBox = initVb.slice() setSvgViewBox(svg, initVb) // Avoid binding multiple times on themeChange/pjax if (wrap.__mermaidGestureBound) return wrap.__mermaidGestureBound = true // Helper: map client (viewport) coordinate -> viewBox coordinate const clientToViewBox = (clientX, clientY) => { const rect = svg.getBoundingClientRect() const vb = wrap.__mermaidCurViewBox || getSvgViewBox(svg) const x = vb[0] + (clientX - rect.left) * (vb[2] / rect.width) const y = vb[1] + (clientY - rect.top) * (vb[3] / rect.height) return { x, y, rect, vb } } const state = { pointers: new Map(), startVb: null, startDist: 0, startCenter: null } const clampVb = vb => { const init = wrap.__mermaidInitViewBox || vb const minW = init[2] * 0.1 const maxW = init[2] * 10 const minH = init[3] * 0.1 const maxH = init[3] * 10 vb[2] = clamp(vb[2], minW, maxW) vb[3] = clamp(vb[3], minH, maxH) return vb } const setCurVb = vb => { vb = clampVb(vb) wrap.__mermaidCurViewBox = vb setSvgViewBox(svg, vb) } const onPointerDown = e => { // Allow only primary button for mouse if (e.pointerType === 'mouse' && e.button !== 0) return svg.setPointerCapture(e.pointerId) state.pointers.set(e.pointerId, { x: e.clientX, y: e.clientY }) if (state.pointers.size === 1) { state.startVb = (wrap.__mermaidCurViewBox || getSvgViewBox(svg)).slice() } else if (state.pointers.size === 2) { const pts = [...state.pointers.values()] const dx = pts[0].x - pts[1].x const dy = pts[0].y - pts[1].y state.startDist = Math.hypot(dx, dy) state.startVb = (wrap.__mermaidCurViewBox || getSvgViewBox(svg)).slice() state.startCenter = { x: (pts[0].x + pts[1].x) / 2, y: (pts[0].y + pts[1].y) / 2 } } } const onPointerMove = e => { if (!state.pointers.has(e.pointerId)) return state.pointers.set(e.pointerId, { x: e.clientX, y: e.clientY }) // Pan with 1 pointer if (state.pointers.size === 1 && state.startVb) { const p = [...state.pointers.values()][0] const prev = { x: e.clientX - e.movementX, y: e.clientY - e.movementY } // movementX/Y unreliable on touch, compute from stored last position const last = wrap.__mermaidLastSinglePointer || p const dxClient = p.x - last.x const dyClient = p.y - last.y wrap.__mermaidLastSinglePointer = p const { rect } = clientToViewBox(p.x, p.y) const vb = (wrap.__mermaidCurViewBox || getSvgViewBox(svg)).slice() const dx = dxClient * (vb[2] / rect.width) const dy = dyClient * (vb[3] / rect.height) setCurVb([vb[0] - dx, vb[1] - dy, vb[2], vb[3]]) return } // Pinch zoom with 2 pointers if (state.pointers.size === 2 && state.startVb && state.startDist > 0) { const pts = [...state.pointers.values()] const dx = pts[0].x - pts[1].x const dy = pts[0].y - pts[1].y const dist = Math.hypot(dx, dy) if (!dist) return const factor = state.startDist / dist // dist bigger => zoom in (viewBox smaller) const cx = (pts[0].x + pts[1].x) / 2 const cy = (pts[0].y + pts[1].y) / 2 const centerClient = { x: cx, y: cy } const pxy = clientToViewBox(centerClient.x, centerClient.y) const cpx = pxy.x const cpy = pxy.y const vb = zoomAtPoint(state.startVb, factor, cpx, cpy) setCurVb(vb) } } const onPointerUpOrCancel = e => { state.pointers.delete(e.pointerId) if (state.pointers.size === 0) { state.startVb = null state.startDist = 0 state.startCenter = null wrap.__mermaidLastSinglePointer = null } else if (state.pointers.size === 1) { // reset single pointer baseline to avoid jump wrap.__mermaidLastSinglePointer = [...state.pointers.values()][0] } } // Wheel zoom (mouse/trackpad) const onWheel = e => { // ctrlKey on mac trackpad pinch; we treat both as zoom e.preventDefault() const delta = e.deltaY const zoomFactor = delta > 0 ? 1.1 : 0.9 const { x, y } = clientToViewBox(e.clientX, e.clientY) const vb = (wrap.__mermaidCurViewBox || getSvgViewBox(svg)).slice() setCurVb(zoomAtPoint(vb, zoomFactor, x, y)) } const onDblClick = () => { const init = wrap.__mermaidInitViewBox if (!init) return wrap.__mermaidCurViewBox = init.slice() setSvgViewBox(svg, init) } svg.addEventListener('pointerdown', onPointerDown) svg.addEventListener('pointermove', onPointerMove) svg.addEventListener('pointerup', onPointerUpOrCancel) svg.addEventListener('pointercancel', onPointerUpOrCancel) svg.addEventListener('wheel', onWheel, { passive: false }) svg.addEventListener('dblclick', onDblClick) } const runMermaid = ele => { window.loadMermaid = true const theme = document.documentElement.getAttribute('data-theme') === 'dark' ? 'dark' : 'default' ele.forEach((item, index) => { const mermaidSrc = item.firstElementChild // Clear old render (themeChange/pjax will rerun) const oldSvg = item.querySelector('svg') if (oldSvg) oldSvg.remove() item.__mermaidGestureBound = false const config = mermaidSrc.dataset.config ? JSON.parse(mermaidSrc.dataset.config) : {} if (!config.theme) { config.theme = theme } const mermaidThemeConfig = `%%{init: ${JSON.stringify(config)}}%%\n` const mermaidID = `mermaid-${index}` const mermaidDefinition = mermaidThemeConfig + mermaidSrc.textContent const renderFn = mermaid.render(mermaidID, mermaidDefinition) const renderMermaid = svg => { mermaidSrc.insertAdjacentHTML('afterend', svg) if (true) initMermaidGestures(item) item.__mermaidOriginalSvg = svg if (true) attachMermaidViewerButton(item) } // mermaid v9 and v10 compatibility typeof renderFn === 'string' ? renderMermaid(renderFn) : renderFn.then(({ svg }) => renderMermaid(svg)) }) } const codeToMermaid = () => { const codeMermaidEle = document.querySelectorAll('pre > code.mermaid') if (codeMermaidEle.length === 0) return codeMermaidEle.forEach(ele => { const preEle = document.createElement('pre') preEle.className = 'mermaid-src' preEle.hidden = true preEle.textContent = ele.textContent const newEle = document.createElement('div') newEle.className = 'mermaid-wrap' newEle.appendChild(preEle) ele.parentNode.replaceWith(newEle) }) } const loadMermaid = () => { if (true) codeToMermaid() const $mermaid = document.querySelectorAll('#article-container .mermaid-wrap') if ($mermaid.length === 0) return const runMermaidFn = () => runMermaid($mermaid) btf.addGlobalFn('themeChange', runMermaidFn, 'mermaid') window.loadMermaid ? runMermaidFn() : btf.getScript('https://cdn.jsdelivr.net/npm/mermaid/dist/mermaid.min.js').then(runMermaidFn) } btf.addGlobalFn('encrypt', loadMermaid, 'mermaid') window.pjax ? loadMermaid() : document.addEventListener('DOMContentLoaded', loadMermaid) })()