gracecluvohio commented on code in PR #3744: URL: https://github.com/apache/texera/pull/3744#discussion_r2364649732
########## core/workflow-operator/src/main/scala/edu/uci/ics/amber/operator/visualization/choroplethMap/ChoroplethMapOpDesc.scala: ########## @@ -0,0 +1,112 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package edu.uci.ics.amber.operator.visualization.choroplethMap + +import com.fasterxml.jackson.annotation.{JsonProperty, JsonPropertyDescription} +import com.kjetland.jackson.jsonSchema.annotations.JsonSchemaTitle +import edu.uci.ics.amber.core.tuple.{AttributeType, Schema} +import edu.uci.ics.amber.operator.PythonOperatorDescriptor +import edu.uci.ics.amber.core.workflow.OutputPort.OutputMode +import edu.uci.ics.amber.core.workflow.{InputPort, OutputPort, PortIdentity} +import edu.uci.ics.amber.operator.metadata.{OperatorGroupConstants, OperatorInfo} +import edu.uci.ics.amber.operator.metadata.annotations.AutofillAttributeName + +class ChoroplethMapOpDesc extends PythonOperatorDescriptor { + + @JsonProperty(value = "locations", required = true) + @JsonSchemaTitle("Locations Column") + @JsonPropertyDescription("Column used to describe location") + @AutofillAttributeName + var locations: String = "" + + @JsonProperty(value = "color", required = true) + @JsonSchemaTitle("Color Column") + @JsonPropertyDescription( + "Column used to determine intensity of color of the region" + ) + @AutofillAttributeName + var color: String = "" + + override def getOutputSchemas( + inputSchemas: Map[PortIdentity, Schema] + ): Map[PortIdentity, Schema] = { + val outputSchema = Schema() + .add("html-content", AttributeType.STRING) + Map(operatorInfo.outputPorts.head.id -> outputSchema) + } + + override def operatorInfo: OperatorInfo = + OperatorInfo( + "Choropleth Map", + "Visualize data using a Choropleth Map that uses shades of colors to show differences in properties or quantities between regions", + OperatorGroupConstants.VISUALIZATION_ADVANCED_GROUP, + inputPorts = List(InputPort()), + outputPorts = List(OutputPort(mode = OutputMode.SINGLE_SNAPSHOT)) + ) + + def manipulateTable(): String = { + assert(locations.nonEmpty) + assert(color.nonEmpty) + s""" + | table.dropna(subset=['$locations', '$color'], inplace = True) + |""".stripMargin + } + + def createPlotlyFigure(): String = { + assert(locations.nonEmpty && color.nonEmpty) + s""" + | fig = px.choropleth(table, locations="$locations", color="$color", color_continuous_scale=px.colors.sequential.Plasma) + |""".stripMargin + } + + override def generatePythonCode(): String = { + val finalCode = + s""" + |from pytexera import * + | + |import plotly.express as px + |import plotly.io + |import plotly + | + |class ProcessTableOperator(UDFTableOperator): + | + | # Generate custom error message as html string + | def render_error(self, error_msg) -> str: + | return '''<h1>Choropleth map is not available.</h1> + | <p>Reason is: {} </p> + | '''.format(error_msg) + | + | @overrides + | def process_table(self, table: Table, port: int) -> Iterator[Optional[TableLike]]: + | if table.empty: + | yield {'html-content': self.render_error("Input table is empty.")} + | return + | ${manipulateTable()} + | if table.empty: + | yield {'html-content': self.render_error("No valid rows left (every row has at least 1 missing value).")} + | return + | ${createPlotlyFigure()} + | fig.update_layout(margin={"r":0,"t":0,"l":0,"b":0}) Review Comment: Sounds good -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
