Merge branch 'master' into dash-wind-streaming

Author: christopherjeon

apps/dash-lastodash/.gitignore

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+venv/
+.DS_Store

apps/dash-lastodash/Procfile

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+web:gunicorn --pythonpath apps/dash-lastodash lastodash:server

apps/dash-lastodash/README.md

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+# LAStoDash
+
+## About this app
+
+LAStoDash is a sample Dash project that takes a [Log ASCII Standard (LAS) file](http://www.cwls.org/las/) and builds a web app to view its content and print in PDF format.
+
+As indicated in the [LAS 2.0 Specifications](http://www.cwls.org/wp-content/uploads/2017/02/Las2_Update_Feb2017.pdf), LAS files contain sections that are marked by a ~. The [LAS file](alcor1.las) used for this app contains four of these sections, including version and wrap mode information (~V), well identification (~W), curve information (~C), and ASCII log data (~A), all of which are displayed in some format (e.g. graph, table) in the demo app and the [printable report in PDF format](alcor1.pdf).
+
+## How to run this app locally
+
+## Installation
+
+Clone the repository:
+
+```
+$ git clone https://github.com/plotly/dash-sample-apps.git
+```
+
+Redirect to the respective app directory:
+
+```
+$ cd dash-sample-apps/apps/dash-lastodash
+```
+
+Install the requirements:
+```
+$ pip3 install -r requirements.txt
+```
+
+Find out how to run the app:
+```
+$ Python3 lastodash.py -h
+usage: lastodash.py [-h] [--debug] lasfile
+
+Launch a Dash app to view a LAS log.
+
+positional arguments:
+  lasfile      Log ASCII Standard (LAS) file
+
+optional arguments:
+  -h, --help   show this help message and exit
+  --debug, -d  enable debug mode
+```
+
+Run the app for the LAS file `alcor1.las`:
+```
+$ Python3 lastodash.py alcor1.las
+```
+
+View in your browser at http://127.0.0.1:8050.
+
+## Screenshots
+
+![Screencast](alcor1.gif)
+
+See [here](alcor1.pdf) the report printed in PDF format.
+
+## Resources
+
+* [Dash documentation for Python](https://dash.plot.ly/)
+* [Log ASCII Standard (LAS) file](http://www.cwls.org/las/)

apps/dash-lastodash/alcor1.gif

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+/*
+ * Copyright 2018 Nicolas Riesco
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors
+ * may be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+(function() {
+    registerPrintButtonHandler();
+    return;
+
+    function registerPrintButtonHandler() {
+        var button = document.getElementById("las-print");
+
+        if (!button || button.onclick === onPrintButtonClick) {
+            setTimeout(registerPrintButtonHandler, 200);
+            return;
+        }
+
+        button.onclick = onPrintButtonClick;
+    }
+
+    function onPrintButtonClick() {
+        window.print();
+    }
+})();