Fixed Cube::fromIsd to add "LineScanTimes" table from HRSC isds (#5705)

* in-progress-work

* convert table back to isis

* fix changelog

* Addressed PR feedback

Author: amystamile-usgs

CHANGELOG.md

@@ -44,6 +44,7 @@ release.
 - Fixed kaguyatc2isis invalid BandBin values [#5629](https://github.com/DOI-USGS/ISIS3/issues/5629)
 - Fixed SpiceClient to handle redirect requests.
 - Fixed jigsaw to default OUTADJUSTMENTH5 option to false and allow this feature to run on read-only images [#5700](https://github.com/DOI-USGS/ISIS3/issues/5700)
+- Fixed Cube::fromIsd to add "LineScanTimes" table from HRSC isds [#5668](https://github.com/DOI-USGS/ISIS3/issues/5668)
 
 ## [9.0.0] - 09-25-2024
 

isis/src/base/objs/Cube/Cube.cpp

@@ -98,6 +98,12 @@ namespace Isis {
    */
   void Cube::fromIsd(const FileName &fileName, Pvl &label, nlohmann::json &isd, QString access) {
     fromLabel(fileName, label, access);
+
+    PvlGroup &instGrp = label.findGroup("Instrument", Pvl::Traverse);
+    if (isd.contains("line_scan_rate") && (QString)instGrp["InstrumentId"] == "HRSC") {
+      attachLineScanTableFromIsd(isd);
+    }
+    
     attachSpiceFromIsd(isd);
 
     close();
@@ -1532,6 +1538,26 @@ namespace Isis {
     this->camera();
   }
 
+  void Cube::attachLineScanTableFromIsd(nlohmann::json isd) {
+      TableField ephTimeField("EphemerisTime", TableField::Double);
+      TableField expTimeField("ExposureTime", TableField::Double);
+      TableField lineStartField("LineStart", TableField::Integer);
+
+      TableRecord timesRecord;
+      timesRecord += ephTimeField;
+      timesRecord += expTimeField;
+      timesRecord += lineStartField;
+
+      Table timesTable("LineScanTimes", timesRecord);
+      for (size_t i = 0; i < isd["line_scan_rate"].size(); ++i) {
+        timesRecord[0] = isd["line_scan_rate"][i][1].get<double>() + isd["center_ephemeris_time"].get<double>();
+        timesRecord[1] = isd["line_scan_rate"][i][2].get<double>();
+        timesRecord[2] = (int)(isd["line_scan_rate"][i][0].get<double>() + 0.5);
+        timesTable += timesRecord;
+      }
+      this->write(timesTable);
+  }
+
 
   /**
    * If this is an external cube label file, this will give you the cube dn file that this label

isis/src/base/objs/Cube/Cube.h

@@ -245,6 +245,7 @@ namespace Isis {
       bool labelsAttached() const;
 
       void attachSpiceFromIsd(nlohmann::json Isd);
+      void attachLineScanTableFromIsd(nlohmann::json isd);
 
       void close(bool remove = false);
       Cube *copy(FileName newFile, const CubeAttributeOutput &newFileAttributes);

isis/src/mex/objs/HrscCamera/HrscCamera.cpp

@@ -42,12 +42,12 @@ namespace Isis {
     SetPixelPitch(0.007);
     instrumentRotation()->SetFrame(-41210);
 
+    ReadLineRates(cube);
+
     // Get required keywords from instrument group
     Pvl &lab = *cube.label();
     PvlGroup &inst = lab.findGroup("Instrument", Pvl::Traverse);
 
-    ReadLineRates(lab.fileName());
-
     // Setup detector map for transform of image pixels to detector position
     new VariableLineScanCameraDetectorMap(this, p_lineRates);
     DetectorMap()->SetDetectorSampleSumming(inst["Summing"]);
@@ -119,14 +119,14 @@ namespace Isis {
 
 
   /**
-   * @param filename
+   * @param cube
    */
-  void HrscCamera::ReadLineRates(QString filename) {
-    Table timesTable("LineScanTimes", filename);
+  void HrscCamera::ReadLineRates(Cube &cube) {
+    Table timesTable = cube.readTable("LineScanTimes");
 
     if(timesTable.Records() <= 0) {
       QString msg = "Table [LineScanTimes] in [";
-      msg += filename + "] must not be empty";
+      msg += cube.fileName() + "] must not be empty";
       throw IException(IException::Unknown, msg, _FILEINFO_);
     }
 
@@ -138,7 +138,7 @@ namespace Isis {
 
     if(p_lineRates.size() <= 0) {
       QString msg = "There is a problem with the data within the Table ";
-      msg += "[LineScanTimes] in [" + filename + "]";
+      msg += "[LineScanTimes] in [" + cube.fileName() + "]";
       throw IException(IException::Unknown, msg, _FILEINFO_);
     }
   }

isis/src/mex/objs/HrscCamera/HrscCamera.h

@@ -68,7 +68,7 @@ namespace Isis {
       virtual int SpkReferenceId() const;
 
     private:
-      void ReadLineRates(QString filename);
+      void ReadLineRates(Cube &cube);
 
       std::vector<LineRateChange> p_lineRates; /**< Vector of the variable line rates for this
                                                     camera model.*/